doc: fix doc metadata for Node.js 16.19.0

When cherry-picking the release commit for Node.js 16.19.0 to the `main`
branch git updated the metadata for the wrong item in `doc/api/test.md`.

Refs: #45506 (comment)
Refs: nodejs/Release#771
PR-URL: #45863
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
Reviewed-By: Tierney Cyren <hello@bnb.im>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: richardlau

doc/api/test.md

@@ -1043,9 +1043,7 @@ not disassociate the mocks from the `MockTracker` instance.
 ### `mock.setter(object, methodName[, implementation][, options])`
 
 <!-- YAML
-added:
-  - v19.3.0
-  - v16.19.0
+added: v19.3.0
 -->
 
 This function is syntax sugar for [`MockTracker.method`][] with `options.setter`
@@ -1054,7 +1052,9 @@ set to `true`.
 ## Class: `TapStream`
 
 <!-- YAML
-added: v18.9.0
+added:
+  - v18.9.0
+  - v16.19.0
 -->
 
 * Extends {ReadableStream}