Fix /5/ urls (plone#1463)

* temporary exclude broken/unsecure link from check

Author: ksuess

README.md

@@ -51,7 +51,7 @@ For technical support for **Plone in general**, please ask a question on our [Co
 
 [Training](https://github.com/plone/training) is a collection of different trainings, developed and created by the Plone Community.
 
-For an HTML version, please browse to our [Training Website](https://training.plone.org/5/).
+For an HTML version, please browse to our [Training Website](https://training.plone.org/).
 
 
 ## License

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

@@ -448,7 +448,7 @@ The value you use for this CSS rule should identify one of the fontello icons in
 
 It is not possible at this time to set an icon for your add-on package control panels without including CSS in your package.
 
-For documentation on how to use it in your own add-ons see https://training.plone.org/5/mastering-plone-5/registry.html.
+For documentation on how to use it in your own add-ons see {doc}`training:mastering-plone-5/registry`.
 
 
 ### Properties

docs/conf.py

@@ -79,6 +79,7 @@
     r"http://127.0.0.1",
     r"http://yoursite",
     r"https://www.linode.com",
+    r"https://vhs-ehrenamtsportal.de", # SSLError(SSLCertVerificationError
     r"https://github.com/orgs/plone/teams/developers",  # requires auth
     r"https://github.com/plone/documentation/issues/new/choose",  # requires auth
     # Ignore specific anchors
@@ -99,8 +100,10 @@
     r"^/_static/",
 ]
 linkcheck_anchors = True
-linkcheck_timeout = 10
-linkcheck_retries = 2
+# linkcheck_timeout = 10
+# linkcheck_retries = 2
+linkcheck_timeout = 5
+linkcheck_retries = 1
 
 # The suffix of source filenames.
 source_suffix = {
@@ -186,7 +189,7 @@
 intersphinx_mapping = {
     "plone": ("https://6.docs.plone.org/", None),  # for imported packages
     "python": ("https://docs.python.org/3/", None),
-    "training": ("https://training.plone.org/5/", None),
+    "training": ("https://training.plone.org/", None),
 }