doc/README.PATCH-POLICY.SUSE: Update information about the patch
    format (jsc#PED-5021)
    
    * Replace bugzilla.novell.com with bugzilla.suse.com and FATE with Jira.
    * Remove references to links to the patchtools and kernel source. They
      are incorporated in other parts of the text.
    * Use sentence-style capitalization for section headings, as recommended
      in the current SUSE Documentation Style Guide.
    * Fix typos and some wording, in particular avoid use of "there is/are".