Update Windows Subsystem for Linux.md

Added Creator's Update build version for WSL requirement.

Documentation/Debugger/gdb/Windows Subsystem for Linux.md

@@ -1,9 +1,9 @@
 # Windows 10's Windows Subsystem for Linux
-With the release of Windows 10 Creators Update, you will now be able to use Visual Studio Code and the Microsoft C/C++ extension to debug your `Windows Subsystem for Linux (WSL)` [Bash on Ubuntu](https://msdn.microsoft.com/en-us/commandline/wsl/about) projects.
+With the release of Windows 10 Creators Update (Build 15063), you will now be able to use Visual Studio Code and the Microsoft C/C++ extension to debug your `Windows Subsystem for Linux (WSL)` [Bash on Ubuntu](https://msdn.microsoft.com/en-us/commandline/wsl/about) projects.
 
 Code can be written on Windows itself using VSCode and debugged through `bash.exe` to the Bash on Windows layer. 
 
-**NOTE: Creator's Update is required due to bugfixes within the subsystem that we rely on to provide debugging. Debugging using a previous version of WSL is unsupported and likely will not work.**
+**NOTE: Creator's Update (Build 15063 or later) is required due to bugfixes within the subsystem that we rely on to provide debugging. Debugging using a previous version of WSL is unsupported and likely will not work. To check your Windows version, in a command prompt, enter `winver`.**
 
 ## Prerequisites
 * [Windows 10 Creators Update with Windows Subsystem for Linux and Bash](https://msdn.microsoft.com/en-us/commandline/wsl/install_guide) installed.
@@ -83,4 +83,4 @@ This configuration similar to the launch process above. I have chosen to start t
                 "/mnt/z": "z:\\"
             }
         }
-```
+```