Update release steps in contributing doc

Author: jameskerr

CONTRIBUTING.md

@@ -12,13 +12,15 @@
 2. Increment the version number in packages/react-arborist/package.json
 3. Create a branch called release/v0.0.0
 4. Open a PR to main
-5. Test, review, and merge
+5. Test, review, and merge, don't delete branch
 
 ### Create Github Release
 
-1. Create a release based on main
+1. Create a release based on release/v0.0.0
 2. Assign a new tag to be created with v0.0.0
-3. Write release notes
-4. Publish
+3. Title the release "Version 0.0.0"
+4. Write release notes
+5. Publish
+6. Check that it successfully published to npmjs
 
 The Github actions workflow will publish to npm.