Improve a few description fields

modules/programs/bash.nix

@@ -38,6 +38,7 @@ in
       historyIgnore = mkOption {
         type = types.listOf types.str;
         default = [];
+        example = [ "ls" "cd" "exit" ];
         description = "List of commands that should not be saved to the history list.";
       };
 

modules/programs/beets.nix

@@ -14,7 +14,10 @@ in
       settings = mkOption {
         type = types.attrs;
         default = {};
-        description = "Configuration written to ~/.config/beets/config.yaml";
+        description = ''
+          Configuration written to
+          <filename>~/.config/beets/config.yaml</filename>
+        '';
       };
     };
   };

modules/programs/git.nix

@@ -26,7 +26,7 @@ let
         gpgPath = mkOption {
           type = types.str;
           default = "${pkgs.gnupg}/bin/gpg2";
-          defaultText = "''${pkgs.gnupg}/bin/gpg2";
+          defaultText = "\${pkgs.gnupg}/bin/gpg2";
           description = "Path to GnuPG binary to use.";
         };
       };

modules/programs/gnome-terminal.nix

@@ -169,6 +169,7 @@ in
       profile = mkOption {
         default = {};
         type = types.loaOf profileSubModule;
+        description = "A set of Gnome Terminal profiles.";
       };
     };
   };