Fix RELEASE.md typos and main branch

RELEASE.md

@@ -1,22 +1,22 @@
 # How to create a release for this repo
 
-## Make sure `master` builds correctly
+## Make sure `main` builds correctly
 
 Are all our [actions](https://github.com/rnmapbox/maps/actions) passing successfully?  
 If not, make sure to investigate the issue and fix it prior to a release.
 
 ## Bump the version in our package.json
 
-Once you verified, that `master` isn't broken, go on and increase the `version` within our `package.json`.
+Once you verified, that `main` isn't broken, go on and increase the `version` within our `package.json`.
 
 ## Update the CHANGELOG accordingly
 
-Our [`CHANGELOG.md`](https://github.com/rnmapbox/maps/blob/main/CHANGELOG.md) should be updated whenever a PR is merged/ noteworthy changes are commited to `master`.  
+Our [`CHANGELOG.md`](https://github.com/rnmapbox/maps/blob/main/CHANGELOG.md) should be updated whenever a PR is merged/ noteworthy changes are committed to `main`.  
 Prior to a release, the changes should be documented under the `UNRELEASED` section.  
 Once it's clear, that a release is about to be published, move the items under `UNRELEASED` to _this_ releases sections.  
 Let your actions be guided by the previous release entries.
 
-## Draft a new release on Github
+## Draft a new release on GitHub
 
 Within the [releases](https://github.com/rnmapbox/maps/releases) section of the repo you can [`Draft a new release`](https://github.com/rnmapbox/maps/releases/new).