chore: let knip see the docs OG image template

Author: antfubot

knip.jsonc

@@ -41,7 +41,7 @@
       // Nuxt auto-registers `app/components` and `app/composables`; the files
       // here shadow same-named pieces of the comark-docs layer (AppHeaderBrand,
       // useFilteredNavigation, ...), so nothing imports them explicitly.
-      "entry": ["app/components/*.vue", "app/composables/*.ts"],
+      "entry": ["app/components/*.vue", "app/components/OgImage/*.vue", "app/composables/*.ts"],
       // `app/components/AssistantChat.vue` shadows the comark-docs layer's own
       // component and mirrors its imports verbatim (see the file header). These
       // packages are provided transitively by the `comark-docs` layer, not