add Letterboxd

docs/defaults/collections.md

@@ -68,6 +68,7 @@ This is the default Kometa collection ordering:
 | `basic`              | `010`              |
 | `anilist`            | `020`              |
 | `imdb`               | `020`              |
+| `letterboxd`         | `020`              |
 | `myanimelist`        | `020`              |
 | `other_chart`        | `020`              |
 | `tautulli`           | `020`              |
@@ -211,4 +212,4 @@ libraries:
 
 {%
    include-markdown "./example.md"
-%}
+%}