doc/next: update release notes for go list -m -json

For #65614

Change-Id: I49921aefb79efbc012e745cc2abd9ff36c0a9149
Reviewed-on: https://go-review.googlesource.com/c/go/+/593495


Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Sam Thanawalla <samthanawalla@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

doc/next/3-tools.md

@@ -45,7 +45,6 @@ the files but instead print the necessary changes as a unified diff.
 It exits with a non-zero code if updates are needed.
 
 <!-- go.dev/issue/52792, CL 562775 -->
-<!-- TODO: Improve this if needed. -->
 The `go` `list` `-m` `-json` command now includes new `Sum` and `GoModSum` fields.
 This is similar to the existing behavior of the `go` `mod` `download` `-json` command.