doc: update changelog.

doc/changelog.dox

@@ -185,7 +185,8 @@ See also:
 -   A new, redesigned @ref Trade::MeshData class that allows much more flexible
     access to vertex/index data without unnecessary allocations and data
     conversions or copies. Importers expose it through the new
-    @ref Trade::AbstractImporter::mesh() family of APIs.
+    @ref Trade::AbstractImporter::mesh() family of APIs. See
+    [mosra/magnum#371](https://github.com/mosra/magnum/pull/371).
 -   Ability to import image mip levels via an additional parameter in
     @ref Trade::AbstractImporter::image2D(),
     @ref Trade::AbstractImporter::image2DLevelCount() and similar APIs for 1D