Reference style links

Author: purnesh42H

Documentation/grpc-metadata.md

@@ -169,7 +169,7 @@ Server side metadata sending and receiving examples are available [here](../exam
 ### Receiving metadata
 
 To read metadata sent by the client, the server needs to retrieve it from RPC
-context using [FromIncomingContext](https://pkg.go.dev/google.golang.org/grpc/metadata#FromIncomingContext).
+context using [FromIncomingContext][1].
 If it is a unary call, the RPC handler's context can be used.
 For streaming calls, the server needs to get context from the stream.
 
@@ -196,8 +196,8 @@ func (s *server) SomeStreamingRPC(stream pb.Service_SomeStreamingRPCServer) erro
 #### Unary call
 
 To send header and trailer to client in unary call, the server can call
-[SendHeader](https://godoc.org/google.golang.org/grpc#SendHeader) and [SetTrailer](https://godoc.org/google.golang.org/grpc#SetTrailer)
-functions in module [grpc](https://godoc.org/google.golang.org/grpc).
+[SendHeader][2] and [SetTrailer][3] functions in module
+[grpc](https://godoc.org/google.golang.org/grpc).
 These two functions take a context as the first parameter.
 It should be the RPC handler's context or one derived from it:
 
@@ -214,7 +214,9 @@ func (s *server) SomeRPC(ctx context.Context, in *pb.someRequest) (*pb.someRespo
 
 #### Streaming call
 
-For streaming calls, header and trailer can be sent using function [SendHeader](https://godoc.org/google.golang.org/grpc#SendHeader) and [SetTrailer](https://godoc.org/google.golang.org/grpc#SetTrailer) in interface [ServerStream](https://godoc.org/google.golang.org/grpc#ServerStream):
+For streaming calls, header and trailer can be sent using function
+[SendHeader][2] and [SetTrailer][3] in interface
+[ServerStream](https://godoc.org/google.golang.org/grpc#ServerStream):
 
 ```go
 func (s *server) SomeStreamingRPC(stream pb.Service_SomeStreamingRPCServer) error {
@@ -228,10 +230,15 @@ func (s *server) SomeStreamingRPC(stream pb.Service_SomeStreamingRPCServer) erro
 ```
 
 Do not use
-[FromOutgoingContext](https://pkg.go.dev/google.golang.org/grpc/metadata#FromOutgoingContext) on the server to write metadata to be sent to the client.
-[FromOutgoingContext](https://pkg.go.dev/google.golang.org/grpc/metadata#FromOutgoingContext) is for client-side use only.
+[FromOutgoingContext][4] on the server to write metadata to be sent to the client.
+[FromOutgoingContext][4] is for client-side use only.
 
 ## Updating metadata from a server interceptor
 
 An example for updating metadata from a server interceptor is
 available [here](../examples/features/metadata_interceptor/server/main.go).
+
+[1]: <https://pkg.go.dev/google.golang.org/grpc/metadata#FromIncomingContext> "FromIncomingContext"
+[2]: <https://godoc.org/google.golang.org/grpc#SendHeader> "SendHeader"
+[3]: https://godoc.org/google.golang.org/grpc#SetTrailer "SetTrailer"
+[4]: https://pkg.go.dev/google.golang.org/grpc/metadata#FromOutgoingContext "FromOutgoingContext"