Typo fix (#17946)

packages/react-dom/src/events/ReactDOMEventReplaying.js

@@ -293,7 +293,7 @@ export function queueDiscreteEvent(
           // to attempt hydrating that one.
           continue;
         } else {
-          // We're still blocked from hydation, we have to give up
+          // We're still blocked from hydration, we have to give up
           // and replay later.
           break;
         }