README.md: update contribute URL

/doc/contribute.html now redirects to /doc/contribute.

Change-Id: Ib342d515bf6e74bb5807ce21f8df3d985bc7e490
GitHub-Last-Rev: c491a060da22d1bb456283f5ed0ae2894f0365ca
GitHub-Pull-Request: golang/go#48005
Reviewed-on: https://go-review.googlesource.com/c/go/+/345590
Trust: Cherry Mui <cherryyz@google.com>
Trust: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>

diff --git a/README.md b/README.md
index 837734b6e574bfd1f3c99d2a8a4845e58534dbb8..5aca9587fa47e81c13207d036f8b1864f9a65db4 100644 (file)
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ for source installation instructions.
 
 Go is the work of thousands of contributors. We appreciate your help!
 
-To contribute, please read the contribution guidelines at https://golang.org/doc/contribute.html.
+To contribute, please read the contribution guidelines at https://golang.org/doc/contribute.
 
 Note that the Go project uses the issue tracker for bug reports and
 proposals only. See https://golang.org/wiki/Questions for a list of