doc: link directly to https://golang.org/dl/
Fixes #8705.
LGTM=adg
R=golang-codereviews, bradfitz, adg
CC=golang-codereviews
https://golang.org/cl/142890044
diff --git a/doc/go1.html b/doc/go1.html
index 5cf5df9..1665d74 100644
--- a/doc/go1.html
+++ b/doc/go1.html
@@ -2035,4 +2035,4 @@
Installation details are described on the
<a href="/doc/install">Getting Started</a> page, while
the distributions themselves are listed on the
-<a href="/dl/">downloads page</a>.
+<a href="https://golang.org/dl/">downloads page</a>.
