Configure repo for open source controls (#706)

Author: AlexJerabek

docs/docfx.json

@@ -39,7 +39,7 @@
       "uhfHeaderId": "office-scripts",
       "searchScope": ["Office Scripts"],
       "breadcrumb_path": "/office/dev/scripts/breadcrumb/toc.json",
-      "feedback_system": "GitHub",
+      "feedback_system": "OpenSource",
       "feedback_github_repo": "OfficeDev/office-scripts-docs",
       "feedback_product_url": "/answers/tags/321/office-development",
       "ms.suite": "office",
@@ -48,6 +48,10 @@
       "ms.topic": "conceptual",
       "ms.subservice": "scripts",
       "ms.service": "excel",
+      "open_source_feedback_contributorGuideUrl": "https://github.com/OfficeDev/office-scripts-docs/blob/main/Contributing.md",
+      "open_source_feedback_issueTitle": "",
+      "open_source_feedback_issueUrl": "https://github.com/OfficeDev/office-scripts-docs/blob/main/Issue_Template.md",
+      "open_source_feedback_productName": "Office Scripts",
       "titleSuffix": "Office Scripts"
     },
     "fileMetadata": {