Use suggested syntax fromhttps://github.com//pull/1976/files

Author: danieljurek

docfx.json

@@ -6,7 +6,7 @@
           "**/*.md",
           "**/*.yml"
         ],
-        "exclude": [ "docs-ref-services/latest/*-index.md" ],
+        "exclude": [ "**/*-index.md" ],
         "src": "docs-ref-services/latest",
         "group": "latest",
         "dest": "api/overview/azure"
@@ -16,7 +16,7 @@
           "**/*.md",
           "**/*.yml"
         ],
-        "exclude": [ "docs-ref-services/preview/*-index.md" ],
+        "exclude": [ "**/*-index.md" ],
         "src": "docs-ref-services/preview",
         "group": "preview",
         "dest": "api/overview/azure"
@@ -26,7 +26,7 @@
           "**/*.md",
           "**/*.yml"
         ],
-        "exclude": [ "docs-ref-services/legacy/*-index.md" ],
+        "exclude": [ "**/*-index.md" ],
         "src": "docs-ref-services/legacy",
         "group": "previous",
         "dest": "api/overview/azure"
@@ -36,7 +36,7 @@
           "*.md",
           "*.yml"
         ],
-        "exclude": [ "docs-ref-services/*-index.md" ],
+        "exclude": [ "**index.md" ],
         "src": "docs-ref-services",
         "group": "all",
         "dest": "api/overview/azure"