fix nginx mode

acme.sh

@@ -3161,14 +3161,14 @@ _checkConf() {
       FOUND_REAL_NGINX_CONF="$2"
       return 0
     fi
-    if cat "$2" | tr "\t" " " | grep "^ *include *.*;" >/dev/null; then
+    if cat "$2" | tr "\t" " " | grep "^ *include *;" >/dev/null; then
       _debug "Try include files"
-      for included in $(cat "$2" | tr "\t" " " | grep "^ *include *.*;" | sed "s/include //" | tr -d " ;"); do
+      for included in $(cat "$2" | tr "\t" " " | grep "^ *include *;" | sed "s/include //" | tr -d " ;"); do
         _debug "check included $included"
         if ! _startswith "$included" "/" && _exists dirname; then
           _relpath="$(dirname "$_c_file")"
           _debug "_relpath" "$_relpath"
-          included="$_relpath/included"
+          included="$_relpath/$included"
         fi
         if _checkConf "$1" "$included"; then
           return 0