style: apply cargo fmt workspace-wide

Pure formatting pass from `cargo fmt --all`. No logic changes. Separating
this out so the 1.9 release feature commits that follow show only their
intentional edits.

wfe-opensearch/src/lib.rs

@@ -80,7 +80,7 @@ impl SearchIndex for OpenSearchIndex {
             .client
             .indices()
             .exists(opensearch::indices::IndicesExistsParts::Index(&[
-                &self.index_name,
+                &self.index_name
             ]))
             .send()
             .await