Silence redocly-cli rule checking examples (#2238)

Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>

changelogs/internal/newsfragments/2238.clarification

@@ -0,0 +1 @@
+Silence failing redocly-cli rule.

redocly.yaml

@@ -9,3 +9,6 @@ rules:
   no-path-trailing-slash: off
   operation-2xx-response: off
   spec-strict-refs: error
+  # $ref in examples are not spec-compliant, yet we find them useful. Disable this rule
+  # and instead check example schema using `check-event-schema-examples.py`
+  no-invalid-schema-examples: off