Fixing wrongly formatted readme

Contributing to Hometown section would show up as title instead of simple body text.

README.md

@@ -81,7 +81,7 @@ Hometown uses [semantic versioning](https://semver.org) and follows a versioning
 ## Contributing to Hometown
 
 Setting up your Hometown development environment is [exactly like setting up your Mastodon development environment](https://docs.joinmastodon.org/dev/overview/). Pull requests should be made to the `hometown-dev` branch, which is our default branch in Github.
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 You can open issues for bugs you've found or features you think are missing. You can also submit pull requests to this repository or submit translations using Crowdin. To get started, take a look at [CONTRIBUTING.md](CONTRIBUTING.md). If your contributions are accepted into Mastodon, you can request to be paid through [our OpenCollective](https://opencollective.com/mastodon).
 
 **IRC channel**: #mastodon on irc.libera.chat