Fix for htdig documention

[John Tapsell]

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Hi all,
  This is my first bug report and bug fix for kdevelop - treat me gently for I
shall make mistakes ;)

  In htdigindex.cpp in _both_ documentation directories, there is code to
create a htdig.conf file.

  However it has a line saying:
 ts << "limit_urls_to:\t\tfile://" << endl;

  which should be changed to:
ts << "limit_urls_to:\t\tfile:// http://localhost/" << endl;

  Reading the documentation at htdig.org, it says that the limit_urls_to  will
always begin "http://"  and never "file://"  so this limit_url_to effectively
stops any of the documentation being parsed.

  I have this problem on my machine, and have been unable to determine if
other have the same problem.
  Anyone not experiancing this problem, and find the documentation to be fine,
try deleting all the files in
~/.kde/share/apps/kdevdocumentation/search/htdig.conf
and then redoing the index.

  Btw, I suggested changing it to "..file:// http://localhost/"  but changing
it to "...http://localhost/"   only seems to work fine - but best to be on
the safe side.

  Thank you

JohnFlux
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