Minor change

Author: devbm7

src/rexplain/core/tester.py

@@ -191,4 +191,4 @@ def test(self, pattern: str, test_string: str, flags: int = 0) -> MatchResult:
                 break
         else:
             failed_at = min(len(pattern), len(test_string))
-        return MatchResult(matches=False, reason="No match at all.", failed_at=failed_at, partial_matches=[])
+        return MatchResult(matches=False, reason="No match at all.", failed_at=failed_at, partial_matches=[])