Update MAINTAINING.md

Deleted the extra line, hoping it will solve the issue.

Author: Prashant168

docs/MAINTAINING.md

@@ -102,7 +102,6 @@ If you're the current release manager, follow these steps:
 2. Fill out checklist
 3. After release is published, close release milestone
 
-
 ## Publishing a release
 
 1. Run `yarn release:prep` and type in the new version i.e. 3.8.1