docs(changelog): name the overlay cards fragment after its pull request

Co-Authored-By: Claude Fable 5.2 <[email protected]>

changelog.d/1687-overlay-cards-vue.md

@@ -4,4 +4,4 @@
   a Vue component (`WorldOverlayCards`) at the place the overlay solves for
   them; the overlay still paints their leader lines. `?overlayCards=all` draws
   the ambient detail cards the same way and `?overlayCards=off` returns every
-  card to the canvas (mazy1998).
+  card to the canvas (mazy1998, #1687).