Merge pull request #58086 from corpix/fix/doc/wireless-semicolon

added missing semicolon to documentation

nixos/doc/manual/configuration/wireless.xml

···
     psk = "abcdefgh";
   };
   "free.wifi" = {};
-}
+};
 </programlisting>
   Be aware that keys will be written to the nix store in plaintext! When no
   networks are set, it will default to using a configuration file at