Fixed terminology issue per acrolinx

Author: v-shils

articles/active-directory/managed-identities-azure-resources/TOC.yml

@@ -88,7 +88,7 @@
     items:
     - name: Acquire an access token
       href: how-to-use-vm-token.md
-    - name: Sign to Powershell and CLI using Managed Identity
+    - name: Sign to PowerShell and CLI using Managed Identity
       href: how-to-use-vm-sign-in.md
     - name: Use with Azure SDKs
       href: how-to-use-vm-sdk.md