[doc] List possible severity levels for JSON report format
@@ -1932,7 +1932,8 @@ similar to this one:
- `message` (str): message reported by the checker.
- `checker_name` (str): identifier of the rule (checker) that was evaluated
to produce the result.
-- `severity` (str | null): CodeChecker severity level (optional).
+- `severity` (str | null): CodeChecker severity level (optional). Possible
+values are: `CRITICAL`, `HIGH`, `MEDIUM`, `LOW`, `STYLE`, `UNSPECIFIED`.
- `report_hash` (str | null): bug identifier hash (optional).
- `analyzer_name` (str | null): analyzer name which reported the bug
(optional).
