feat: add links to GQMs

Author: jeffabailey

measuring/use_gqm.md

@@ -1,9 +1,24 @@
 # Use Goals, Questions, and Metrics
+
 ========
 
+*An overview of the GQM catalog.*
+
 ```mermaid
 graph LR;
 reduce-duplication[Reduce Duplication] --> who-uses[Who Uses];
 who-uses --> usage-count[Usage Count];
 usage-count --> reduce-duplication[Reduce Duplication];
 ```
+
+## Goals
+
+* [Reduce Duplication](../goals/reduce_duplication.md)  
+
+## Questions
+
+* [Who uses the InnerSource project?](../questions/who-uses.md)
+
+## Metrics
+
+* [Usage Count](../metrics/usage_count.md)