Add product taxonomy to improve findability (#43)

Author: davidbritch

docs/Mono.Android/en/docfx.json

@@ -51,6 +51,7 @@
         "ms.topic": "managed-reference",
         "ms.prod": "xamarin",
         "ms.technology":"xamarin-android",
+        "products": ["https://authoring-docs-microsoft.poolparty.biz/devrel/f0c462af-0ef9-4821-b36f-ba3d94736e2b"],
         "defaultDevLang": "csharp"
       },
       "fileMetadata": {
@@ -60,7 +61,7 @@
       },
       "template": [],
       "dest": "_site",
-      "xrefService": [ "https://xref.docs.microsoft.com/query?uid={uid}" ], 
+      "xrefService": [ "https://xref.docs.microsoft.com/query?uid={uid}" ],
       "isCanonicalUrlWithMoniker": true,
       "lruSize": 0
     }