Fix inverted words in Security FAQ document.

Fix by 0xdade, proposed at https://github.com/chromium/chromium/pull/32/files.
Thank you!

Bug: None
Change-Id: Id1ade1985c83aec49ad4bf6431ab25e3c20c2705
TBR: awhalley
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1928241
Auto-Submit: Chris Palmer <[email protected]>
Reviewed-by: Chris Palmer <[email protected]>
Commit-Queue: Chris Palmer <[email protected]>
Cr-Commit-Position: refs/heads/master@{#717959}
diff --git a/docs/security/faq.md b/docs/security/faq.md
index d57a52e..5689f15 100644
--- a/docs/security/faq.md
+++ b/docs/security/faq.md
@@ -417,7 +417,7 @@
 useful security measure but it tightly couples client and server configurations
 and completely breaks when those configurations are out of sync. In order to
 manage that risk we need to ensure that we can promptly update pinning clients
-an in emergency and ensure that non-emergency changes can be deployed in a
+in an emergency and ensure that non-emergency changes can be deployed in a
 reasonable timeframe.
 
 Each of the conditions listed above helps ensure those properties: