Add suggestion to use qmtexec if .qmt file is given to lbexec

GaudiConf/python/GaudiConf/LbExec/cli_utils.py

@@ -305,6 +305,10 @@ def _suggest_module_fix(spec: str, module_name: str,
             corrected = shlex.join(argv)
             _print_diff(original, corrected)
             click.echo(err=True)
+    elif spec[-4:] == ".qmt":
+        log_error(
+            "Is it possible you are trying to run a .qmt test? If so, use qmtexec."
+        )
     else:
         log_error("Failed to find a suggested fix")