doc: fix another broken link

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/8763045

diff --git a/doc/articles/race_detector.html b/doc/articles/race_detector.html
index 30458ef0d6f8c89c7ee5c831d6ac2abf4bdeb921..5c649f669147471ebe9682174104431b32fadf85 100644 (file)
--- a/doc/articles/race_detector.html
+++ b/doc/articles/race_detector.html
@@ -142,7 +142,7 @@ $ GORACE="log_path=/tmp/race/report strip_path_prefix=/my/go/sources/" go test -
 
 <p>
 When you build with <code>-race</code> flag, the <code>go</code> command defines additional
-<a href="/pkg/go/build/#Build_Constraints">build tag</a> <code>race</code>.
+<a href="/pkg/go/build/#hdr-Build_Constraints">build tag</a> <code>race</code>.
 You can use the tag to exclude some code and tests when running the race detector.
 Some examples:
 </p>