Merge pull request #486 from codingsince1985/master

remove duplicated paragraph

en/11.1.md

@@ -131,9 +131,7 @@ Go handles errors and checks the return values of functions in a C-like fashion,
 		}
 	}
 
-The above example demonstrate access to data and template call has detected error when an error occurs , call a unified handler http.Error, returns a 500 error code to the client , and display the corresponding error data. But when more and more HandleFunc join, so error-handling logic code will be more and more, in fact, we can customize the router to reduce code ( refer to realize the idea of ​​the third chapter of HTTP Detailed) .
-
-The above function is an example of getting data and handling an error when it occurs by calling a unified error processing function called `http.Error`. In this case, it will return  an Internal Error 500 code to the client, and display the corresponding error data. Even using this method however, when more and more `HandleFunc`'s are needed, the error-handling logic can still become quite bloated. An alternative approach would be to customize our router to handle errors by default:
+The above example demonstrate access to data and template call has detected error when an error occurs , call a unified handler http.Error, returns a 500 error code to the client , and display the corresponding error data. But when more and more HandleFunc join, so error-handling logic code will be more and more, in fact, we can customize the router to reduce code (refer to realize the idea of ​​the third chapter of HTTP Detailed).
 
     type appHandler func(http.ResponseWriter, *http.Request) error