[release] docs: update commands.md by running tools/generate.go

golang.org/cl/238624 added a new experimental command and should've updated the doc.

Change-Id: Id018a1302be765e7bb69db5beab7da42dc22ecb1
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/239018
Reviewed-by: Brayden Cloud <bcloud@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
(cherry picked from commit b4a484b59c4e3fe0966ea1056ddaeb5b77a83da0)
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/239084
diff --git a/docs/commands.md b/docs/commands.md
index 251fefe..11f0984 100644
--- a/docs/commands.md
+++ b/docs/commands.md
@@ -182,3 +182,7 @@
 ### `Go: Restart Language Server`
 
 Restart the running instance of the language server
+
+### `Go: Choose Go Environment`
+
+Choose a different Go version or binary for this project. (WIP)