nit

prdoc/pr_7042.prdoc

 title: `networking::TransactionPool` should accept `Arc`
 doc:
 - audience: Node Dev
-  description: The `sc_network_transactions::config::TransactionPool` trait now accepts an `Arc` for transactions.
+  description: The `sc_network_transactions::config::TransactionPool` trait now returns an `Arc` for transactions.
 crates:
 - name: sc-network-transactions
   bump: minor