fix(glossy): fix forward linking (broken themes)

Fixes [#19](https://github.com/swaits/typst-collection/issues/19).

Themes must emit `entry.label` for terms to be able to forward-link to
their glossary entrie.

glossy/src/themes/academic.typ

@@ -40,7 +40,7 @@
           grid(
             columns: (1fr, auto),
             gutter: 0.75em,
-            [#short-display#long-display#description],
+            [#short-display#long-display#description#entry.label],
             text(fill: rgb("#666666"), entry.pages)
           )
         }