Fix linkcheck

Author: stevepiercy

docs/backend/upgrading/v60.md

@@ -168,7 +168,7 @@ See [PLIP 3211](https://github.com/plone/Products.CMFPlone/issues/3211).
 Plone 6 has a new control panel for relations, `@@inspect-relations`.
 As Manager you may want to use this control panel to look for and fix possible problems.
 
-See [PLIP 3232](https://github.com/plone/Products.CMFPlone/issues/3232).
+See [PLIP 3232](https://github.com/plone/Products.CMFPlone/pull/3232).
 
 
 (v60-deprecated-unicode-property-types-label)=

docs/classic-ui/theming/from-scratch.md

@@ -19,7 +19,6 @@ Theming based on a filesystem package without any dependency.
 
 * Create a theme package as explained here.
 * Remove what you do not need
-* Add [package.json](https://github.com/collective/plonetheme.munich/blob/master/package.json)
 * Overrides
 * Static files
 

docs/conf.py

@@ -70,7 +70,7 @@
     r"http://localhost:\d+",
     r"http://127.0.0.1",
     # r"http://example.com",
-    # r"https://github.com/plone/documentation/issues/new/choose",  # requires auth
+    r"https://github.com/plone/documentation/issues/new/choose",  # requires auth
 ]
 linkcheck_anchors = False
 linkcheck_timeout = 10