Update the hacking.html location in misc-docs.
Update the hacking.html location in misc-docs.

* doc/misc-docs/best_practices.xml
  (misc-docs-best_practices-sect-1, misc-docs-best_practices-sect-2): 
    Update links to the hacking.html file and add missing <filename/> 
    elements.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@855934 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion