Fix linkcheck

Author: stevepiercy

docs/backend/upgrading/version-specific-migration/p4x-to-p5x-upgrade.md

@@ -26,7 +26,7 @@ To upgrade add-ons to Plone 5, see also {doc}`upgrade-addons-to-50`.
 -   Always upgrade from the latest version of 4.x to the latest version of 5.x (4.3.20 to 5.2.9 at the time of writing).
     This will resolve many migration-specific issues.
 -   If you have problems, ask for help on https://community.plone.org.
--   The talk _How to upgrade sites to Plone 5_ has a [video](https://youtu.be/bQ-IpO-7F00?t=1m17s) and [slides](http://de.slideshare.net/derschmock/upgrade-to-plone-5).
+-   The talk _How to upgrade sites to Plone 5_ has a [video](https://www.youtube.com/watch?t=1m17s&v=bQ-IpO-7F00&feature=youtu.be) and [slides](https://de.slideshare.net/derschmock/upgrade-to-plone-5).
 
 
 (upgrading-plone-4.x-to-5.0-changes-due-to-implemented-plips-label)=
@@ -223,7 +223,7 @@ https://docs.plone.org/adapt-and-extend/theming/resourceregistry.html
 ```
 
 Plone 5 introduces some new concepts, for some, with working with JavaScript in Plone.
-Plone 5 utilizes Asynchronous Module Definition (AMD) with [requirejs](http://requirejs.org/).
+Plone 5 utilizes Asynchronous Module Definition (AMD) with [requirejs](https://requirejs.org/).
 
 We chose AMD over other module loading implementations (such as commonjs) because AMD can be used in a non-compiled form in the browser.
 

docs/backend/upgrading/version-specific-migration/upgrade-addons-to-51.md

@@ -430,7 +430,7 @@ Content type icons are rendered as background images using a sprite image and CS
 
 ### Plone 5
 
-Content type icons are rendered as [fontello fonts](http://fontello.com/) using CSS elements `before` or `after`.
+Content type icons are rendered as [fontello fonts](https://fontello.com/) using CSS elements `before` or `after`.
 
 ```html
 <span class="summary" title="Document">

docs/backend/upgrading/version-specific-migration/upgrade-to-51.md

@@ -14,7 +14,7 @@ myst:
 This chapter provides instructions and tips for upgrading to Plone 5.1 from Plone 5.0.
 
 ```{note}
-If you want to upgrade add-ons to Plone 5.1, please see {doc}`upgrading-addons-to-51`.
+If you want to upgrade add-ons to Plone 5.1, please see {doc}`upgrade-addons-to-51`.
 ```
 
 ## General information
@@ -264,7 +264,7 @@ Now you can upload them as proper images, and then get scales in the form of JPE
 The `plone.namedfile` package was partially restructured.
 If you are using utility functions or internal methods from this package, you should check that your code still works.
 
-The [piexif](http://piexif.readthedocs.io/en/latest/) was added as dependency.
+The [piexif](https://piexif.readthedocs.io/en/latest/) was added as dependency.
 
 
 ### Faster Indexing
@@ -432,7 +432,7 @@ Your folderish content types should either use the templates from `plone.app.con
 
 ### Rejected And Postponed PLIPs
 
-For details about rejected or postponed PLIPs see the [github PLIP project](https://github.com/plone/Products.CMFPlone/projects/1) and the [Framework Team PLIP status sheet](https://docs.google.com/spreadsheets/d/15Cut73TS5l_x8djkxNre5k8fd7haGC5OOSGigtL2drQ/).
+For details about rejected or postponed PLIPs see the [github PLIP project](https://github.com/plone/Products.CMFPlone/projects/1) and the [Framework Team PLIP status sheet](https://docs.google.com/spreadsheets/d/15Cut73TS5l_x8djkxNre5k8fd7haGC5OOSGigtL2drQ/edit).
 
 
 ## Known Issues

docs/backend/upgrading/version-specific-migration/upgrade-to-52.md

@@ -89,7 +89,7 @@ Admins will notice that the ZMI has a new Twitter Bootstrap-based theme, and som
 There are a lot of changes in Zope.
 For details please see the following documents.
 
--   [What's new in Zope 4.0](https://zope.readthedocs.io/en/latest/zope4/news.html)
+-   [What's new in Zope 4.0](https://zope.readthedocs.io/en/latest/news.html#what-s-new-in-zope-4)
 -   [Changelog for alpha versions](https://github.com/zopefoundation/Zope/blob/4.0a6/CHANGES.rst)
 -   [Changelog for beta versions](https://zope.readthedocs.io/en/latest/changes.html)
 

docs/backend/upgrading/version-specific-migration/upgrade-to-python3.md

@@ -150,7 +150,7 @@ It also can make changes that are not really needed.
 You need to closely review all changes after you run this tool.
 
 `python-modernize` will warn you when it is not sure what to do with a possible problem.
-Check this [Cheat Sheet](http://python-future.org/compatible_idioms.html) with idioms for writing Python 2/3 compatible code.
+Check this [Cheat Sheet](https://python-future.org/compatible_idioms.html) with idioms for writing Python 2/3 compatible code.
 
 `python-modernize` adds an import of the compatibility library `six` if needed.
 The import is added as the last import, therefore it is often necessary to reorder the imports.
@@ -398,7 +398,7 @@ Here is a list of helpful references on the topic of porting Python 2 to Python
 
 -   https://portingguide.readthedocs.io/en/latest/index.html
 -   https://eev.ee/blog/2016/07/31/python-faq-how-do-i-port-to-python-3/
--   http://getpython3.com/diveintopython3/
+-   https://diveintopython3.net/
 -   https://docs.djangoproject.com/en/1.11/topics/python3/
 -   https://docs.ansible.com/ansible/latest/dev_guide/developing_python_3.html
 -   https://docs.python.org/2/library/doctest.html#debugging

docs/conf.py

@@ -74,16 +74,19 @@
     r"http://localhost",
     r"http://0.0.0.0",
     r"http://127.0.0.1",
+    r"http://yoursite",
     r"https://www.linode.com",
     r"https://github.com/plone/documentation/issues/new/choose",  # requires auth
     # Ignore specific anchors
     r"https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS/Errors#Identifying_the_issue",
     r"https://github.com/browserslist/browserslist#queries",
     r"https://github.com/nodejs/release#release-schedule",
     r"https://github.com/plone/cookiecutter-zope-instance#options",
+    r"https://github.com/plone/plone.app.contenttypes#migration",
     r"https://github.com/plone/plone.docker#for-basic-usage",
     r"https://github.com/plone/plone.rest#cors",
     r"https://github.com/plone/plone.volto/blob/6f5382c74f668935527e962490b81cb72bf3bc94/src/kitconcept/volto/upgrades.py#L6-L54",
+    r"https://github.com/plone/volto/issues/new/choose",  # requires auth
     r"https://github.com/tc39/proposals/blob/HEAD/finished-proposals.md#finished-proposals",
     r"https://coveralls.io/repos/github/plone/plone.restapi/badge.svg\?branch=master",  # plone.restapi
     r"https://github.com/plone/plone.restapi/blob/dde57b88e0f1b5f5e9f04e6a21865bc0dde55b1c/src/plone/restapi/services/content/add.py#L35-L61",  # plone.restapi