all: fix doc URLs, make consistent

By fixing the generator and:

$ go install ./internal/genv && (for X in $(find . -type d -name 'go*' | perl -npe "s/^..//" ); do genv $X; done)

Change-Id: I93b37ef1ba506047a978cf319a737dab2d542260
Reviewed-on: https://go-review.googlesource.com/130977
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/go1.10/main.go b/go1.10/main.go
new file mode 100644
index 0000000..318e2dd
--- /dev/null
+++ b/go1.10/main.go
@@ -0,0 +1,24 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// The go1.10 command runs the go command from Go 1.10.
+//
+// To install, run:
+//
+//     $ go get golang.org/dl/go1.10
+//     $ go1.10 download
+//
+// And then use the go1.10 command as if it were your normal go
+// command.
+//
+// See the release notes at https://golang.org/doc/go1.10
+//
+// File bugs at https://golang.org/issues/new
+package main
+
+import "golang.org/dl/internal/version"
+
+func main() {
+	version.Run("go1.10")
+}