Merge #11533: Docs: Update WSL installation notes for Fall Creators u…

…pdate

73a7e6d Update WSL installation for Fall Creators update (Thoragh)

Pull request description:

  Fall Creators update (RS3) was released 17 October and it has made some changes to the installation of WSL (no longer requires Developer Mode, out of beta and Ubuntu has to be installed from the Store).

Tree-SHA512: 65073dc787e249959ae6374bfb448fceb17fb2b85ddaaf198e37f7af5ecd905a896294a0acb0a16fe13a78e3fc4c0a3f8ae2637c01912d50ba8f8ece7e897208

doc/build-windows.md

@@ -31,24 +31,19 @@ This feature is not supported in versions of Windows prior to Windows 10 or on
 Windows Server SKUs. In addition, it is available [only for 64-bit versions of
 Windows](https://msdn.microsoft.com/en-us/commandline/wsl/install_guide).
 
-For Windows 10 systems with the Fall Creators Update applied (version >= 16215.0) use the Windows Store
-to install Ubuntu. Search for "Linux" in the Windows Store and install the free "Ubuntu" application.
-Full instructions are available on the above link.
+Full instructions to install WSL are available on the above link.
+To install WSL on Windows 10 with Fall Creators Update installed (version >= 16215.0) do the following:
 
-To get the bash shell, you must first activate the feature in Windows.
-
-1. Turn on Developer Mode
-  * Open Settings -> Update and Security -> For developers
-  * Select the Developer Mode radio button
-  * Restart if necessary
-2. Enable the Windows Subsystem for Linux feature
+1. Enable the Windows Subsystem for Linux feature
   * From Start, search for "Turn Windows features on or off" (type 'turn')
-  * Select Windows Subsystem for Linux (beta)
+  * Select Windows Subsystem for Linux
   * Click OK
   * Restart if necessary
+2. Install Ubuntu
+  * Open Microsoft Store and search for Ubuntu or use [this link](https://www.microsoft.com/store/productId/9NBLGGH4MSV6)
+  * Click Install
 3. Complete Installation
-  * Open a cmd prompt and type "bash"
-  * Accept the license
+  * Open a cmd prompt and type "Ubuntu"
   * Create a new UNIX user account (this is a separate account from your Windows account)
 
 After the bash shell is active, you can follow the instructions below, starting