Fix typo (#1308)

examples/src/streaming/client.rs

@@ -76,7 +76,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     println!("\r\nBidirectional stream echo:");
     bidirectional_streaming_echo(&mut client, 17).await;
 
-    // Echo stream that sends up to `usize::MAX` requets. One request each 2s.
+    // Echo stream that sends up to `usize::MAX` requests. One request each 2s.
     // Exiting client with CTRL+C demonstrate how to distinguish broken pipe from
     // graceful client disconnection (above example) on the server side.
     println!("\r\nBidirectional stream echo (kill client with CTLR+C):");