fix toc/breadcrumb issue option #1

Author: mairaw

docfx.json

@@ -1,4 +1,4 @@
-{
+{
   "build": {
     "markdownEngineName": "dfm-latest",
     "content": [
@@ -21,6 +21,7 @@
         "src": "docs",
         "dest": ".",
         "exclude": [
+          "toc.md",
           "api/overwrites/**",
           "samples/**/*.*",
           "**/includes/**",
@@ -34,6 +35,7 @@
       },
       {
         "files": [
+          "docs/toc.md",
           "toc.yml",
           "index.md"
         ]