Fix typo in Automatic Batching example (#4532)

Co-authored-by: sanghyupjeong-29cm <hyupee@29cm.co.kr>

content/blog/2022-03-29-react-v18.md

@@ -87,7 +87,7 @@ setTimeout(() => {
 }, 1000);
 
 // After: updates inside of timeouts, promises,
-// native event handlers or any other event are batched.`
+// native event handlers or any other event are batched.
 setTimeout(() => {
   setCount(c => c + 1);
   setFlag(f => !f);