cmd/go/internal/mvs: Fix link to blog post

Change-Id: I2a2c8dda05f8ea455e6db23b1507d27adc7791c3
Reviewed-on: https://go-review.googlesource.com/118055
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

vendor/cmd/go/internal/mvs/mvs.go

diff --git a/vendor/cmd/go/internal/mvs/mvs.go b/vendor/cmd/go/internal/mvs/mvs.go
index c7ddb6f..8936186 100644
--- a/vendor/cmd/go/internal/mvs/mvs.go
+++ b/vendor/cmd/go/internal/mvs/mvs.go
@@ -3,7 +3,7 @@
 // license that can be found in the LICENSE file.
 
 // Package mvs implements Minimal Version Selection.
-// See https://research.swtch.com/vgo3.
+// See https://research.swtch.com/vgo-mvs.
 package mvs
 
 import (