feat: add open in new window guidance for gqm

Author: jeffabailey

measuring/use_gqm.md

@@ -4,6 +4,8 @@
 
 This page works better in GitHub; [click here](https://bit.ly/3tOrsbO).
 
+When opening diagram links, right click to open in a new window until this discussion is resolved; [Mermaid no longer render links](https://github.com/orgs/community/discussions/106690), or another solution arises.
+
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 WARNING: Changes to this graph are overwritten by a GitHub workflow.