Fix typo in webtests doc.

Found a small typo in the markdown document for web tests.

Change-Id: I1fac6b24514104a7053586c2e0fcce20adfddaab
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5178611
Reviewed-by: Yaroslav Shalivskyy <[email protected]>
Commit-Queue: Gaston Rodriguez <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1244330}
diff --git a/docs/testing/web_tests.md b/docs/testing/web_tests.md
index db6d6dc..fa0f400 100644
--- a/docs/testing/web_tests.md
+++ b/docs/testing/web_tests.md
@@ -252,7 +252,7 @@
 *** note
 [BUILD.gn](../../BUILD.gn) assumes flag-specific builders always runs on linux bots, so
 flag-specific test expectations and baselines are only downloaded to linux bots.
-If you need run flag-specific builderst-n other platforms, please update
+If you need run flag-specific builders on other platforms, please update
 BUILD.gn to download flag-specific related data to that platform.
 ***