chore: remove repetitive words (#1653)

Signed-off-by: pavedroad <[email protected]>

examples/routeguide-tutorial.md

@@ -678,7 +678,7 @@ async fn print_features(client: &mut RouteGuideClient<Channel>) -> Result<(), Bo
 As in the simple RPC, we pass a single value request. However, instead of getting a
 single value back, we get a stream of `Features`.
 
-We use the the `message()` method from the `tonic::Streaming` struct to repeatedly read in the
+We use the `message()` method from the `tonic::Streaming` struct to repeatedly read in the
 server's responses to a response protocol buffer object (in this case a `Feature`) until there are
 no more messages left in the stream.
 

tonic/src/transport/service/add_origin.rs

@@ -49,7 +49,7 @@ where
         // Split the request into the head and the body.
         let (mut head, body) = req.into_parts();
 
-        // Update the the request URI
+        // Update the request URI
         head.uri = {
             // Split the request URI into parts.
             let mut uri: http::uri::Parts = head.uri.into();