Set default default height to 1 in home-manager module

Author: maxcabrajac

nix/modules/home-manager.nix

@@ -158,7 +158,7 @@ in
         };
 
         height = mkNumericOption {
-          default.absolute = 0;
+          default.absolute = 1;
           description = ''
             The minimum height of the runner, the runner will expand to fit all the entries.