[SQUASH-ME] Clarify fully qualified links

Author: jrfnl

CONTRIBUTING.md

@@ -48,7 +48,7 @@ When in doubt, open an issue first to discuss your change proposal.
 ### Guidelines for Updating the Wiki Files
 
 * Small PRs fixing only one thing will be better received than larger PRs fixing a lot of things in one go.
-* Always use fully qualified links. This ensures that the links will work when pages are viewed/edited in this repo, as well as when the pages are viewed from the PHPCS Wiki.
+* Always use absolute links (https://...). This ensures that the links will work when pages are viewed/edited in this repo, as well as when the pages are viewed from the PHPCS Wiki.
 * Add table of contents markers if appropriate.
     The start of a page containing a table of contents should look like this:
     ```md