Update concepts/toc.yml

Co-authored-by: mnorman-ms <mnorman@steyer.net>

Author: v-sdhakshina

concepts/toc.yml

@@ -947,7 +947,7 @@ items:
       href: teams-embed-within-own-app.md
     - name: Approvals app APIs
       href: approvals-app-api.md
-      displayName: Approvals, Approvals API, Get approvals
+      displayName: approvals, Approvals API, get approvals
     - name: Payment models and licensing requirements
       href: teams-licenses.md
     - name: Implementation differences in national clouds