Corrected formatting of json files

examples/csharp/route_guide/RouteGuide/route_guide_db.json: Removed BOM
encoding. Some json parsers cannot natively open these files. There are
more portable ways to define Unicode encodings than embedded in files.

src/csharp/doc/docfx.json: Incorrect json format.

examples/csharp/route_guide/RouteGuide/route_guide_db.json

@@ -1,4 +1,4 @@
-[{
+[{
     "location": {
         "latitude": 407838351,
         "longitude": -746143763

src/csharp/doc/docfx.json

@@ -24,7 +24,7 @@
         "dest": "api"
       },
       {
-        "files": [ "toc.yml"],
+        "files": [ "toc.yml"]
       }
     ],
     "globalMetadata": {