Fix typo in scheduler_job_runner.py (apache#47418)

Author: shahar1

airflow/jobs/scheduler_job_runner.py

@@ -935,7 +935,7 @@ def _execute(self) -> int | None:
                 except Exception:
                     self.log.exception("Exception when executing Executor.end on %s", executor)
 
-            # Under normal execution, this doesn't metter, but by resetting signals it lets us run more things
+            # Under normal execution, this doesn't matter, but by resetting signals it lets us run more things
             # in the same process under testing without leaking global state
             reset_signals.close()
             self.log.info("Exited execute loop")