Improve warning

tex/polyglossia.sty

@@ -2087,7 +2087,7 @@
            {
             \xpg_warning_msg:n
               {No~ hyphenation~ patterns~ for~ #1~ found \iow_newline:
-               I~ will~ use~ the~ 'null'~ language~ instead!}
+               Falling~ back~ to~ the~ default~ patterns~ (=~English)!}
                \exp_args:Nc \adddialect {l@#1} 0
            }
      }