[kde-doc-english] Possible typo into katepart doc

[Antoni Bella Pérez]

 Hi

  This r is a typo?

r'\\raw'

katepart_development.po:

<userinput>dsVerbatimString</userinput>, verbatim or raw strings like 'raw 
\\backlash' in Perl, CoffeeScript, and shells, as well as r'\\raw' in Python.

  Regards
  Toni