gopls/doc/release: add release notes for struct tag hover info

Add stub release notes for the change to hover implemented in CL 581836.
This is mostly just a placeholder; in the future, we should consolidate
release notes related to hover changes.

Updates golang/go#66176

Change-Id: I06121f6cb527248c7cda0d14f2f3ec47b8dda38d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/584555
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
diff --git a/gopls/doc/release/v0.16.0.md b/gopls/doc/release/v0.16.0.md
index 295ad5b..608cee9 100644
--- a/gopls/doc/release/v0.16.0.md
+++ b/gopls/doc/release/v0.16.0.md
@@ -92,8 +92,9 @@
 
 Henceforth, gopls will always include any analyzers run by vet.
 
+### Hover shows size/offset info, and struct tags
 
-### Hover shows size/offset info
+TODO: consolidate release notes related to Hover improvements.
 
 Hovering over the identifier that declares a type or struct field now
 displays the size information for the type, and the offset information
@@ -104,6 +105,10 @@
 
 TODO: example hover image.
 
+Hovering over a field with struct tags now also includes those tags.
+
+TODO: example hover image
+
 ### Hover and definition on doc links
 
 Go 1.19 added support for [links in doc