Remove Melinda as a docs approver

Author: will-gant

toc/working-groups/app-runtime-interfaces.md

@@ -225,8 +225,6 @@ areas:
 
 - name: Docs
   approvers:
-  - name: Melinda Jeffs Gutermuth
-    github: mjgutermuth
   - name: Chloe Hollingsworth
     github: cshollingsworth
   - name: Anita Flegg