shorten title

Author: carlrab

articles/traffic-manager/toc.yml

@@ -38,7 +38,7 @@
     items:
     - name: Overview
       href: cli-samples.md
-    - name: Direct traffic across multiple regions for high application availability
+    - name: Direct traffic across regions for HA
       href: scripts/traffic-manager-cli-websites-high-availability.md
   - name: Azure PowerShell
     href: powershell-samples.md