Because GitHub rate limits linkcheck, ignore checking hundreds of iss… (#1774)

* Because GitHub rate limits linkcheck, ignore checking hundreds of issue and pull request links

* Fix switcher URL

Author: stevepiercy

docs/conf.py

@@ -85,12 +85,14 @@
     # Ignore pages that require authentication
     r"https://github.com/orgs/plone/teams/",  # requires auth
     r"https://github.com/plone/documentation/issues/new",  # requires auth
-    r"https://github.com/plone/volto/issues/new",  # requires auth
     r"https://opensource.org/",  # requires auth
     # Ignore github.com pages with anchors
     r"https://github.com/.*#.*",
     # Ignore github.com searches
     r"https://github.com/search",
+    # Ignore rate limiting by github.com
+    r"https://github.com/plone/volto/issues",
+    r"https://github.com/plone/volto/pull",
     # Ignore other specific anchors
     r"https://coveralls.io/repos/github/plone/plone.restapi/badge.svg\?branch=main",  # plone.restapi
     r"https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS/Errors#Identifying_the_issue",
@@ -243,7 +245,7 @@
     "repository_url": "https://github.com/plone/documentation",
     "search_bar_text": "Search",
     "switcher": {
-        "json_url": "/_static/switcher.json",
+        "json_url": "https://6.docs.plone.org/_static/switcher.json",
         "version_match": version,
     },
     "use_edit_page_button": True,