simplify and fix fetching chrome version after some wikipedia format change

fetchers/chrome

@@ -5,7 +5,7 @@ echo "usage: $0 url output" 1>&2
 exit 1
 fi
 if find "$RANDRSS_ROOT/fetchers/chrome_version" -mtime +1 | grep -q chrome_version ; then
-curl "https://en.wikipedia.org/w/index.php?title=Template:Latest_stable_software_release/Google_Chrome&action=edit" | grep version1 | sed -e 's/.*version1 = \([0-9][0-9]\).\([0-9]\)\+.\([0-9]\+\)\.\([0-9]\+\)..*/\1.\2.\3.\4/g' > /"$RANDRSS_ROOT/fetchers/chrome_version"
+curl "https://en.wikipedia.org/w/index.php?title=Template:Latest_stable_software_release/Google_Chrome&action=edit" | grep version1 | awk '{print $4}' | sed -e 's/[^0-9.]//g' > /"$RANDRSS_ROOT/fetchers/chrome_version"
 fi
 VERSION=$(cat "$RANDRSS_ROOT/fetchers/chrome_version")
 useragent=$(shuf -n 1 $RANDRSS_ROOT/fetchers/chrome_agents  | sed -e "s/VERSION/$VERSION/g")