Fix warnings in rich text documentation.

See #15346.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74688 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix html documentation warnings.

See #15346.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74689 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix ribbon documentation warnings.

See #15346.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74690 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix various documentation warnings throughout core and base.

See #15346.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74691 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
fix missing ;

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74692 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fixed up the bad merge earlier. We should now be similar to master.
Merge remote-tracking branch 'wxWidgets/master' into aui-dynamic-notebook