Steps to reproduce

1. python pwb.py category move on category with a talkpage (without page deletion rights)

Expected behavior
Both category page and talkpage should be proposed for deletion by {{delete}} template

Current behavior
Category talkpage deletion request by bot is declined by AbuseFilter (1), because it adds a category to the talk page:

{{delete|1=Robot: nahrazení kategorie Příkazy DOS za [[Kategorie:Příkazy DOSu|Příkazy DOSu]]}}

Translated to english: {{delete|1=Bot: category Old moved to [[Category:New|New]]}}

Cause
There is colon character (:) missing in the parameter. In category.py the content of the first parameter is taken from automatic summary. The summary contains link to New generated by newcat.title(asLink=True) (2). It looks like the asLink part doesn't add a semicolon as expected.

Configuration
python 3.6.2