[br] added rule to detect error in:
     *En an armel* -> "En armel".
     *En al levraoueg* -> "El levraoueg".
     *En ar gêr* -> "Er gêr".


git-svn-id: https://languagetool.svn.sourceforge.net/svnroot/languagetool/trunk/languagetool@9646 2fe6a88b-1217-0410-b804-ba6ed01314b8