Fix brackets of maintainer email

The email address of the maintainer must use angle brackes as per https://www.debian.org/doc/debian-policy/ch-controlfields.html#s-f-Maintainer
Also there should be a space between name and email.

src/wdm/debian/control/StandardFile.php

@@ -109,7 +109,7 @@ class StandardFile
     public function setMaintainer($maintainer, $email = false)
     {
         $email = ($email) ? $email : "---";
-        return $this->_setProperty("Maintainer", $maintainer . "[{$email}]");
+        return $this->_setProperty("Maintainer", $maintainer . " <{$email}>");
     }
 
     public function setConflicts($conflicts)