Update release instructions

Author: brianneisler

RELEASE.md

@@ -57,7 +57,7 @@ npm run docs:generate
 - generate the change log
 
 ```sh
-git log --pretty="- %s" --no-merges origin/release/vX.X.X..origin/release/vX.X.X >> CHANGELOG.md
+git log --pretty="- %s" --no-merges release/vX.X.X..release/vX.X.X >> CHANGELOG.md
 ```
 
 - Commit files changes with new version numbers. Replace Xs with new version number.