Made title for selfbuilding bigger

fixes #97

README.md

@@ -224,7 +224,7 @@ Every step in the config file corresponds to one view in the application. These
 
 You can also use the `requirements` field in the yaml, to specify `firmware` or `android` version requirements. The user will then be prompted if these requirements are satisfied. 
 
-### How to build the application for your platform
+## How to build the application for your platform
 
 The executables for the OpenAndroidInstaller are build with [pyinstaller](https://pyinstaller.org/en/stable/index.html). You can create builds for MacOS or Linux with `make build-app`. For Windows the paths need to be modified. For now, you can have a look [here](https://github.com/openandroidinstaller-dev/openandroidinstaller/blob/v0.1.2-alpha/.github/workflows/manual-build-windows.yml#L22) on how it's done.