fix typo and writing improvement

config/hosts/git/forgejo.nix

@@ -45,9 +45,6 @@
         DEFAULT_USER_VISIBILITY = "limited";
         DEFAULT_KEEP_EMAIL_PRIVATE = true;
         ENABLE_BASIC_AUTHENTICATION = false;
-        ENABLE_NOTIFY_MAIL = true;
-        AUTO_WATCH_NEW_REPOS = false;
-        AUTO_WATCH_ON_CHANGES = false;
       };
       repo = {
         DEFAULT_REPO_UNITS = "repo.code,repo.issues,repo.pulls";