Docs: Fix spelling mistakes

[yanyi]

Overview

I was using the repository and noted some spelling mistakes. This PR aims to fix them. Particularly, in the README.md and CONTRIBUTING.md files.

README.md

'reuse' instead of 'resuse':

-as it maximizes the resuse value of your workflow for non-tag pushes.
+as it maximizes the reuse value of your workflow for non-tag pushes.

Remove stutter of "can can":

-You can can configure a number of options for your
+You can configure a number of options for your

Capitalize 'Docker':

-> **⚠️ Note:** This action was previously implemented as a docker container, limiting its use to GitHub Actions Linux virtual environments only. With recent releases, we now support cross platform usage. You'll need to remove the `docker://` prefix in these versions
+> **⚠️ Note:** This action was previously implemented as a Docker container, limiting its use to GitHub Actions Linux virtual environments only. With recent releases, we now support cross platform usage. You'll need to remove the `docker://` prefix in these versions

Rename 'OSX' to 'macOS':

-   A GitHub Action for creating GitHub Releases on Linux, Windows, and OSX virtual environments
+   A GitHub Action for creating GitHub Releases on Linux, Windows, and macOS virtual environments

CONTRIBUTING.md

Additional space removed:

-This a [JavaScript](https://help.github.com/en/articles/about-actions#types-of-actions)  action but uses [TypeScript](https://www.typescriptlang.org/docs/home.html) to generate that JavaScript.
+This a [JavaScript](https://help.github.com/en/articles/about-actions#types-of-actions) action but uses [TypeScript](https://www.typescriptlang.org/docs/home.html) to generate that JavaScript.

End sentences with period:

-Tests can be found under under `__tests__` directory and are runnable with the `npm t` command
+Tests can be found under under `__tests__` directory and are runnable with the `npm t` command.

-A minimal attempt at keeping a consistent code style is can be applied by running `npm run fmt`
-
+A minimal attempt at keeping a consistent code style is can be applied by running `npm run fmt`.

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Let me know what you think of these changes!

[softprops]

Thanks @yanyi!