Populate issue descriptions by default with a note directing reporters to other resources they should consider using first. Make it a comment so that the content does not actually render in the report not removed.
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+<!--
+This issue tracker is for CMake upstream development:
+
+* If you are having trouble building a specific third-party project
+ that uses CMake, ask for help in that project's forums first.
+* If you have a coding or usage question, please ask for help
+ on the CMake discourse forums: https://discourse.cmake.org/
+-->