design: update issue link for gopls-workspaces

Now the discussion is moved to the original feature request issue.

Change-Id: Ibbe8c06ee6ab25f005e229fb690996c68c98815f
GitHub-Last-Rev: ff469c86da08535bd4cfdc11587e1dd3e68752a3
GitHub-Pull-Request: golang/proposal#26
Reviewed-on: https://go-review.googlesource.com/c/proposal/+/253697
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
diff --git a/design/37720-gopls-workspaces.md b/design/37720-gopls-workspaces.md
index 5b79ccc..5929e7e 100644
--- a/design/37720-gopls-workspaces.md
+++ b/design/37720-gopls-workspaces.md
@@ -4,7 +4,9 @@
 
 Last updated: [Date]
 
-Discussion at https://golang.org/issue/37720.
+Discussion at https://golang.org/issue/32394.
+
+(Previously, https://golang.org/issue/37720)
 
 ## Abstract