typo: Double word "function" (MicrosoftDocs#501)

Author: nschonni

docs/ide/refactoring/extract-function.md

@@ -34,8 +34,8 @@ ms.workload: ["cplusplus"]
 
 1. In the **Extract Function/Method (Experimental)** window, enter the new function name, select where you want the code to be placed, and click the **OK** button.
 
- ![Extract function function](images/extractfunction_dialog.png)
+ ![Extract function dialog](images/extractfunction_dialog.png)
 
 1. The new function will be created where you specified, a function prototype in the corresponding header file, and the original code will be changed to call that function.
 
- ![Extract function result](images/extractfunction_result.png)
+ ![Extract function result](images/extractfunction_result.png)