fix RU lang for steam games

data_from_portwine/scripts/functions_helper

@@ -1228,7 +1228,7 @@ pw_init_db () {
             check_variables PW_USE_RAY_TRACING "1"
         fi
 
-        if grep "RUS" "${PORT_WINE_TMP_PATH}/PortProton_loc" &>/dev/null ; then
+        if grep "ru" "${PORT_WINE_TMP_PATH}/PortProton_loc" &>/dev/null ; then
             for chk_lang_and_uname in "steam_emu.ini" "steam_api.ini" "steam_api64.ini" ; do
                 if [[ -f "${PATH_TO_GAME}/${chk_lang_and_uname}" ]] ; then
                     sed -i "s/Language=english/Language=russian/" "${PATH_TO_GAME}/${chk_lang_and_uname}"