Initialize open publishing repository: https://github.com/SharePoint/sp-dev-docs of branch master

Author: VesaJuvonen

.openpublishing.publish.config.json

@@ -28,6 +28,7 @@
     "[email protected]"
   ],
   "branches_to_filter": [],
+  "git_repository_url_open_to_public_contributors": "https://github.com/SharePoint/sp-dev-docs",
   "git_repository_branch_open_to_public_contributors": "master",
   "skip_source_output_uploading": false,
   "need_preview_pull_request": false,
@@ -42,7 +43,8 @@
     {
       "path_to_root": "_themes.pdf",
       "url": "https://github.com/Microsoft/templates.docs.msft.pdf",
-      "branch": "master"
+      "branch": "master",
+      "branch_mapping": {}
     },
     {
       "path_to_root": "PnP-Tools",
@@ -57,12 +59,8 @@
       "Pdf"
     ]
   },
-  "Targets": {  
-    "Pdf": {  
-    "template_folder": "_themes.pdf"  
-    }  
-   }, 
   "need_generate_pdf_url_template": true,
+  "targets": {},
   "JoinTOCPlugin": [
     {
       "ConceptualTOC": "/docs/toc.yml",