[eo] - fixed missing backslash in front of back reference in message      - improved rule REGARDI
[eo] - fixed missing backslash in front of back reference in message
     - improved rule REGARDI


jimregan/languagetool,janissl/languagetool,lopescan/languagetool,languagetool-org/languagetool,languagetool-org/languagetool,lopescan/languagetool,meg0man/languagetool,janissl/languagetool,lopescan/languagetool,janissl/languagetool,meg0man/languagetool,languagetool-org/languagetool,janissl/languagetool,languagetool-org/languagetool,jimregan/languagetool,lopescan/languagetool,meg0man/languagetool,meg0man/languagetool,lopescan/languagetool,janissl/languagetool,meg0man/languagetool,janissl/languagetool,jimregan/languagetool,jimregan/languagetool,jimregan/languagetool,languagetool-org/languagetool