Add index.md exclusion to publishing (reduces OPS publishing errors)

Author: danieljurek

docfx.json

@@ -6,7 +6,7 @@
           "**/*.md",
           "**/*.yml"
         ],
-        "exclude": ["**/*-index.md"],
+        "exclude": [ "**/*-index.md" ],
         "src": "docs-ref-services/latest",
         "group": "latest",
         "dest": "api/overview/azure"
@@ -16,7 +16,7 @@
           "**/*.md",
           "**/*.yml"
         ],
-        "exclude": ["**/*-index.md"],
+        "exclude": [ "**/*-index.md" ],
         "src": "docs-ref-services/preview",
         "group": "preview",
         "dest": "api/overview/azure"
@@ -26,7 +26,7 @@
           "**/*.md",
           "**/*.yml"
         ],
-        "exclude": ["**/*-index.md"],
+        "exclude": [ "**/*-index.md" ],
         "src": "docs-ref-services/legacy",
         "group": "previous",
         "dest": "api/overview/azure"