Revert locally.md

Author: reakaleek

docs/contribute/locally.md

@@ -1,4 +1,4 @@
-# Contribute locally `This is a code block`
+# Contribute locally
 
 Follow these steps to contribute to Elastic docs.
 * [Step 1: Install `docs-builder`](#step-one)
@@ -116,4 +116,4 @@ Open a PR. Good luck.
 
 ## Step 5: View on elastic.co/docs
 
-soon...
+soon...