Merge pull request #19551 from mhaidrygoog/fix_typo

Fix typo
diff --git a/src/core/lib/iomgr/executor/mpmcqueue.cc b/src/core/lib/iomgr/executor/mpmcqueue.cc
index ea2a686..5eac7e2 100644
--- a/src/core/lib/iomgr/executor/mpmcqueue.cc
+++ b/src/core/lib/iomgr/executor/mpmcqueue.cc
@@ -59,7 +59,7 @@
   }
 
   Delete(head_to_remove);
-  // Singal waiting thread
+  // Signal waiting thread
   if (count_.Load(MemoryOrder::RELAXED) > 0 && num_waiters_ > 0) {
     wait_nonempty_.Signal();
   }