Merged PR 12951: Optional Packages: Clarify that 1703 is the minimum …

…(not exact) version

Optional Packages: Clarify that 1703 is the minimum (not exact) version required for optional package support.

Also fix a formatting issue with the "IMPORTANT" callout.

windows-apps-src/packaging/optional-packages.md

@@ -28,7 +28,7 @@ While you're reading this article, it's recommended that you follow along with t
 
 ## Optional packages
 To create an optional package in Visual Studio, you'll need to:
-1. Make sure your app's **Target Platform Min Version** is set to: 10.0.15063.0.
+1. Make sure your app's **Target Platform Min Version** is set to: 10.0.15063.0 or higher.
 2. From your **main package** project, open the `Package.appxmanifest` file. Navigate to the "Packaging" tab and make a note of your **package family name**, which is everything before the "_" character.
 3. From your **optional package** project, right click the `Package.appxmanifest` and select **Open with > XML (Text) Editor**.
 4. Locate the `<Dependencies>` element in the file. Add the following:
@@ -56,6 +56,7 @@ If you want to load code from an optional package into the main package, you wil
 2. From the window, search the Installed Templates for ".txt" and add a new text file.
 > [!IMPORTANT]
 > The new text file must be named: `Bundle.Mapping.txt`.
+
 3. In the `Bundle.Mapping.txt` file you'll specify relative paths to any optional package projects or external packages. A sample `Bundle.Mapping.txt` file should look something like this:
 
 ```syntax
@@ -69,7 +70,7 @@ If you want to load code from an optional package into the main package, you wil
 
 When your solution is configured this way, Visual Studio will create a bundle manifest for the main package with all of the required metadata for related sets. 
 
-Note that like optional packages, a `Bundle.Mapping.txt` file for related sets will only work on Windows 10, version 1703. Additionally, your app's Target Platform Min Version should be set to 10.0.15063.0.
+Note that like optional packages, a `Bundle.Mapping.txt` file for related sets will only work on Windows 10, version 1703 or higher. Additionally, your app's Target Platform Min Version should be set to 10.0.15063.0 or higher.
 
 ## Known issues<a name="known_issues"></a>