Fix test

tests/test_hydra_cli_errors.py

@@ -54,7 +54,11 @@
         param(
             "key={inner_key=extend_list(1, 2, 3)}",
             """Error when parsing index: 1, string: key={inner_key=extend_list(1, 2, 3)} out of ['hydra.sweep.dir=/tmp/pytest-of-runner/pytest-0/test_cli_error_embedded_extend0', 'key={inner_key=extend_list(1, 2, 3)}', 'hydra.mode=RUN']. 
-no viable alternative at input '{inner_key='""",
+no viable alternative at input '{inner_key='
+See https://hydra.cc/docs/1.2/advanced/override_grammar/basic for details
+
+Set the environment variable HYDRA_FULL_ERROR=1 for a complete stack trace.
+""",
             id="embedded extend_list",
         ),
         param(