Update v1.7-release-summary.md

Author: Mark Jensen

documentation/diff-reports-previous-version/v1.7-release-summary.md

@@ -8,4 +8,4 @@
 - Ontology Element: https://www.commoncoreontologies.org/ont00000958 [Information Content Entity]
 - MRO Ontology Element: https://www.commoncoreontologies.org/mro/ont00001808 [is about]
 
-A mapping file is located here.
+A mapping file is located [here](https://github.com/CommonCoreOntology/CommonCoreOntologies/tree/develop/documentation/mappping-new-iris).