CHANGELOG.md: replace reference of v0.22.0 to head of master

Due to some incompatible changes introduced in protocol proposal, the
gopls v0.22.0 no longer contains the accurate integration doc for
interactive refactoring. The target is v0.22.1 (not released yet), until
then, the master branch have the up-to-date information.

For golang/vscode-go#4040

Change-Id: Ibeed08bcbda48e873e889a62cd98810d0dd024a7
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/789202
LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Hongxiang Jiang <hxjiang@golang.org>
Reviewed-by: Madeline Kalil <mkalil@google.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 05efdf3..2c9ed38 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,7 +9,7 @@
 
 * Interactive code actions: Support has been added for interactive refactorings that prompt the user for input before proceeding. This enables more sophisticated code actions that require user choices like "add/remove tags to struct fields", "implement interface".
 
-  This integration follows the language client implementation [guidelines](https://github.com/golang/tools/blob/gopls/v0.22.0/gopls/doc/design/integrating-interactive-refactoring.md). See supported interactive refactoring from gopls [feature doc](https://github.com/golang/tools/blob/gopls/v0.22.0/gopls/doc/features/transformation.md#interactive-code-actions).
+  This integration follows the language client implementation [guidelines](https://github.com/golang/tools/blob/master/gopls/doc/design/integrating-interactive-refactoring.md). See supported interactive refactoring from gopls [feature doc](https://github.com/golang/tools/blob/master/gopls/doc/features/transformation.md#interactive-code-actions).
 
   Dialog support is a non-standard feature of LSP. It is currently supported only by `gopls` and `vscode-go`. We plan to work with the broader LSP community toward a standard specification.