doc/faq: fix a grammar mistake

Change-Id: Ifa060f5f91d7b964eb180465245104411310d423
GitHub-Last-Rev: cd1862f2ca721a4f3d4ede7bcb3e7759ce96c6d5
GitHub-Pull-Request: golang/go#39780
Reviewed-on: https://go-review.googlesource.com/c/go/+/239388
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/doc/go_faq.html b/doc/go_faq.html
index e40dde7..23a3080 100644
--- a/doc/go_faq.html
+++ b/doc/go_faq.html
@@ -515,7 +515,7 @@
 See the <a href="/doc/articles/defer_panic_recover.html">Defer, Panic, and Recover</a> article for details.
 Also, the <a href="https://blog.golang.org/errors-are-values">Errors are values</a> blog post
 describes one approach to handling errors cleanly in Go by demonstrating that,
-since errors are just values, the full power of Go can deployed in error handling.
+since errors are just values, the full power of Go can be deployed in error handling.
 </p>
 
 <h3 id="assertions">