fix

Signed-off-by: Christine Dodrill <me@christine.website>

backend/src/api/webmention.rs

@@ -117,7 +117,7 @@ pub fn lookup_target(conn: MainDatabase, target: String) -> Result<Json<Vec<WebM
             .map_err(Error::Database)?
             .into_iter()
             .map(Into::into)
-            .filter(|wm| {
+            .filter(|wm: &WebMention| {
                 !wm.source.contains("like/twitter") || !wm.source.contains("like/mastodon")
             })
             .collect::<Vec<WebMention>>(),