Merge pull request #20260 from kerbalwzy/master

Fix README: fix the wrong word and delete line number description of the README, which belong to Python example `data_transmission`

examples/python/data_transmission/README.cn.md

@@ -6,31 +6,31 @@
 
   在一次调用中, 客户端只能向服务器传输一次请求数据, 服务器也只能返回一次响应
 
-  `client.py - line:14 - simple_method`
+  `client.py: simple_method`
 
-  `server.py - line:17 - SimpleMethod`
+  `server.py: SimpleMethod`
 
 - #### 客户端流模式
 
   在一次调用中, 客户端可以多次向服务器传输数据, 但是服务器只能返回一次响应
 
-  `clien.py - line:27 - client_streaming_method `
+  `client.py: client_streaming_method `
 
-  `server.py - line:28 - ClientStreamingMethod`
+  `server.py: ClientStreamingMethod`
 
 - #### 服务端流模式 
 
   在一次调用中, 客户端只能向服务器传输一次请求数据, 但是服务器可以多次返回响应
 
-  `clien.py - line:48 - server_streaming_method`
+  `client.py: server_streaming_method`
 
-  `server.py - line:41 - ServerStreamingMethod`
+  `server.py: ServerStreamingMethod`
 
 - #### 双向流模式
 
   在一次调用中, 客户端和服务器都可以向对方多次收发数据
 
-  `client.py - line:63 - bidirectional_streaming_method`
+  `client.py: bidirectional_streaming_method`
 
-  `server.py - line:59 - BidirectionalStreamingMethod`
+  `server.py: BidirectionalStreamingMethod`
 

examples/python/data_transmission/README.en.md

@@ -6,32 +6,32 @@ Four ways of data transmission when gRPC is used in Python.  [Offical Guide](<ht
 
   In a single call, the client can only send request once, and the server can only respond once.
 
-  `client.py - line:14 - simple_method`
+  `client.py: simple_method`
 
-  `server.py - line:17 - SimpleMethod`
+  `server.py: SimpleMethod`
 
 - #### stream-unary
 
   In a single call, the client can transfer data to the server an arbitrary number of times, but the server can only return a response once.
 
-  `clien.py - line:27 - client_streaming_method`
+  `client.py: client_streaming_method`
 
-  `server.py - line:28 - ClientStreamingMethod`
+  `server.py: ClientStreamingMethod`
 
 - #### unary-stream
 
   In a single call, the client can only transmit data to the server at one time, but the server can return the response many times.
 
-  `clien.py - line:48 - server_streaming_method`
+  `client.py: server_streaming_method`
 
-  `server.py - line:41 - ServerStreamingMethod`
+  `server.py: ServerStreamingMethod`
 
 - #### stream-stream
 
   In a single call, both client and server can send and receive data 
   to each other multiple times.
 
-  `client.py - line:63 - bidirectional_streaming_method`
+  `client.py: bidirectional_streaming_method`
 
-  `server.py - line:59 - BidirectionalStreamingMethod`
+  `server.py: BidirectionalStreamingMethod`