[CI] Re-enable and fix linkchecking for docs build (#1990)

docs/conf.py

@@ -190,6 +190,13 @@ texinfo_documents = [
 ]
 
 
+# -- Options for linkcheck builder ----------------------------------------
+
+# A list of regular expressions that match URIs that should not be
+# checked when doing a linkcheck build.
+linkcheck_ignore = [r"https://java.com*"]
+
+
 # Example configuration for intersphinx: refer to the Python standard library.
 intersphinx_mapping = {
     "python": ("https://docs.python.org/3.6", None),

docs/install_windows.rst

@@ -8,7 +8,7 @@ Installing Red on Windows
 Needed Software
 ---------------
 
-* `Python <https://python.org/downloads/>`_ - Red needs Python 3.6
+* `Python <https://www.python.org/downloads/>`_ - Red needs Python 3.6
 
 .. note:: Please make sure that the box to add Python to PATH is CHECKED, otherwise
           you may run into issues when trying to run Red