Fix indentation in sparse-checkout.yml script

Author: weshaggard

eng/common/pipelines/templates/steps/sparse-checkout.yml

@@ -136,8 +136,8 @@ steps:
       pwsh: true
       workingDirectory: $(System.DefaultWorkingDirectory)
 
-    - ${{ if ne(parameters.TokenToUseForAuth, '') }}:
-      - pwsh: |
-          git config unset "http.extraheader"
-        displayName: Removing git config auth header
-        condition: always()
+  - ${{ if ne(parameters.TokenToUseForAuth, '') }}:
+    - pwsh: |
+        git config unset "http.extraheader"
+      displayName: Removing git config auth header
+      condition: always()