Include help url with JSON output format

Related: codeclimate/platform#68

Author: ssbarnea

Diff for: src/ansiblelint/formatters/__init__.py

@@ -150,6 +150,9 @@ def format_result(self, matches: list[MatchError]) -> str:
             issue["type"] = "issue"
             issue["check_name"] = match.tag or match.rule.id  # rule-id[subrule-id]
             issue["categories"] = match.rule.tags
+            if match.rule.url:
+                # https://github.com/codeclimate/platform/issues/68
+                issue["url"] = match.rule.url
             issue["severity"] = self._severity_to_level(match)
             issue["description"] = self.escape(str(match.message))
             issue["fingerprint"] = hashlib.sha256(