Update README.md (actions#145)

Author: er-royalprince

Diff for: README.md

@@ -6,17 +6,17 @@
 
 This action sets up a Python environment for use in actions by:
 
-- optionally installing and adding to PATH a version of Python that is already installed in the tools cache
-- downloading, installing and adding to PATH an available version of Python from GitHub Releases ([actions/python-versions](https://github.com/actions/python-versions/releases)) if a specific version is not available in the tools cache
-- failing if a specific version of Python is not preinstalled or available for download
-- registering problem matchers for error output
+- optionally installing and adding to PATH a version of Python that is already installed in the tools cache.
+- downloading, installing and adding to PATH an available version of Python from GitHub Releases ([actions/python-versions](https://github.com/actions/python-versions/releases)) if a specific version is not available in the tools cache.
+- failing if a specific version of Python is not preinstalled or available for download.
+- registering problem matchers for error output.
 
 # What's new
 
-- Ability to download, install and set up Python packages from `actions/python-versions` that do not come preinstalled on runners
-  - Allows for pinning to a specific patch version of Python without the worry of it ever being removed or changed
-- Automatic setup and download of Python packages if using a self-hosted runner
-- Support for pre-release versions of Python
+- Ability to download, install and set up Python packages from `actions/python-versions` that do not come preinstalled on runners.
+  - Allows for pinning to a specific patch version of Python without the worry of it ever being removed or changed.
+- Automatic setup and download of Python packages if using a self-hosted runner.
+- Support for pre-release versions of Python.
 
 # Usage
 
@@ -122,14 +122,14 @@ Check out our detailed guide on using [Python with GitHub Actions](https://help.
 
 `setup-python` is able to configure Python from two sources:
 
-- Preinstalled versions of Python in the tools cache on GitHub-hosted runners
+- Preinstalled versions of Python in the tools cache on GitHub-hosted runners.
     - For detailed information regarding the available versions of Python that are installed see [Supported software](https://docs.github.com/en/actions/reference/specifications-for-github-hosted-runners#supported-software).
     - For every minor version of Python, expect only the latest patch to be preinstalled.
     - If `3.8.1` is installed for example, and `3.8.2` is released, expect `3.8.1` to be removed and replaced by `3.8.2` in the tools cache.
     - If the exact patch version doesn't matter to you, specifying just the major and minor version will get you the latest preinstalled patch version. In the previous example, the version spec `3.8` will use the `3.8.2` Python version found in the cache.
-- Downloadable Python versions from GitHub Releases ([actions/python-versions](https://github.com/actions/python-versions/releases))
+- Downloadable Python versions from GitHub Releases ([actions/python-versions](https://github.com/actions/python-versions/releases)).
     - All available versions are listed in the [version-manifest.json](https://github.com/actions/python-versions/blob/main/versions-manifest.json) file.
-    - If there is a specific version of Python that is not available, you can open an issue here
+    - If there is a specific version of Python that is not available, you can open an issue here.
 
 # Hosted Tool Cache
 
@@ -174,22 +174,22 @@ If you are experiencing problems while configuring Python on your self-hosted ru
 
 - The Python packages that are downloaded from `actions/python-versions` are originally compiled from source in `/opt/hostedtoolcache/` with the [--enable-shared](https://github.com/actions/python-versions/blob/94f04ae6806c6633c82db94c6406a16e17decd5c/builders/ubuntu-python-builder.psm1#L35) flag, which makes them non-relocatable.
 - Create an environment variable called `AGENT_TOOLSDIRECTORY` and set it to `/opt/hostedtoolcache`. This controls where the runner downloads and installs tools.
-  - In the same shell that your runner is using, type `export AGENT_TOOLSDIRECTORY=/opt/hostedtoolcache`
+  - In the same shell that your runner is using, type `export AGENT_TOOLSDIRECTORY=/opt/hostedtoolcache`.
   - A more permanent way of setting the environment variable is to create a `.env` file in the same directory as your runner and to add `AGENT_TOOLSDIRECTORY=/opt/hostedtoolcache`. This ensures the variable is always set if your runner is configured as a service.
 - Create a directory called `hostedtoolcache` inside `/opt`.
 - The user starting the runner must have write permission to the `/opt/hostedtoolcache` directory. It is not possible to start the Linux runner with `sudo` and the `/opt` directory usually requires root privileges to write to. Check the current user and group that the runner belongs to by typing `ls -l` inside the runners root directory.
 - The runner can be granted write access to the `/opt/hostedtoolcache` directory using a few techniques:
-  - The user starting the runner is the owner, and the owner has write permission
-  - The user starting the runner is in the owning group, and the owning group has write permission
-  - All users have write permission
-- One quick way to grant access is to change the user and group of `/opt/hostedtoolcache` to be the same as the runners using `chown`
-    - `sudo chown runner-user:runner-group opt/hostedtoolcache/`
+  - The user starting the runner is the owner, and the owner has write permission.
+  - The user starting the runner is in the owning group, and the owning group has write permission.
+  - All users have write permission.
+- One quick way to grant access is to change the user and group of `/opt/hostedtoolcache` to be the same as the runners using `chown`.
+    - `sudo chown runner-user:runner-group opt/hostedtoolcache/`.
 - If your runner is configured as a service and you run into problems, make sure the user that the service is running as is correct. For more information, you can [check the status of your self-hosted runner](https://help.github.com/en/actions/hosting-your-own-runners/configuring-the-self-hosted-runner-application-as-a-service#checking-the-status-of-the-service).
 
 ### Mac
 
 - The same setup that applies to `Linux` also applies to `Mac`, just with a different tools cache directory.
-- Create a directory called `/Users/runner/hostedtoolcache`
+- Create a directory called `/Users/runner/hostedtoolcache`.
 - Set the `AGENT_TOOLSDIRECTORY` environment variable to `/Users/runner/hostedtoolcache`.
 - Change the permissions of `/Users/runner/hostedtoolcache` so that the runner has write access.
 
@@ -200,8 +200,8 @@ If you are experiencing problems while configuring Python on your self-hosted ru
 
 # License
 
-The scripts and documentation in this project are released under the [MIT License](LICENSE)
+The scripts and documentation in this project are released under the [MIT License](LICENSE).
 
 # Contributions
 
-Contributions are welcome! See our [Contributor's Guide](docs/contributors.md)
+Contributions are welcome! See our [Contributor's Guide](docs/contributors.md).