fmt: add a space between inner doc-comments and following items (#5880)

examples/beacon-api-sse/src/main.rs

@@ -14,6 +14,7 @@
 //! configured to emit payload attributes events.
 //!
 //! See lighthouse beacon Node API: <https://lighthouse-book.sigmaprime.io/api-bn.html#beacon-node-api>
+
 use clap::Parser;
 use futures_util::stream::StreamExt;
 use mev_share_sse::{client::EventStream, EventClient};