chore: typos (#14330)

examples/custom-payload-builder/src/job.rs

@@ -54,7 +54,7 @@ where
     }
 }
 
-/// A [PayloadJob] is a a future that's being polled by the `PayloadBuilderService`
+/// A [PayloadJob] is a future that's being polled by the `PayloadBuilderService`
 impl<Tasks, Builder> Future for EmptyBlockPayloadJob<Tasks, Builder>
 where
     Tasks: TaskSpawner + Clone + 'static,

examples/custom-rlpx-subprotocol/src/subprotocol/protocol/proto.rs

@@ -45,7 +45,7 @@ impl CustomRlpxProtoMessage {
             message: CustomRlpxProtoMessageKind::PingMessage(msg.into()),
         }
     }
-    /// Creates a ping message
+    /// Creates a pong message
     pub fn pong_message(msg: impl Into<String>) -> Self {
         Self {
             message_type: CustomRlpxProtoMessageId::PongMessage,