Fix typo in Threading and Tasks doc

Change-Id: Ib3b297674c11fd9d3ed71a775b681ba6d2f65fab
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2041873
Auto-Submit: Oliver Li <[email protected]>
Reviewed-by: Scott Violet <[email protected]>
Commit-Queue: Oliver Li <[email protected]>
Cr-Commit-Position: refs/heads/master@{#740283}
diff --git a/docs/threading_and_tasks.md b/docs/threading_and_tasks.md
index 1f24ef0..5ace1f2 100644
--- a/docs/threading_and_tasks.md
+++ b/docs/threading_and_tasks.md
@@ -337,7 +337,7 @@
 ### Posting to the Main Thread or to the IO Thread in the Browser Process
 
 To post tasks to the main thread or to the IO thread, use
-`content::GetUIThreadTaskRunner({})` or `content::GetUIThreadTaskRunner({})`
+`content::GetUIThreadTaskRunner({})` or `content::GetIOThreadTaskRunner({})`
 from
 [`content/public/browser/browser_thread.h`](https://cs.chromium.org/chromium/src/content/public/browser/browser_thread.h)