remove tla_wpfxmlnsv1 token (#3501)

* remove tla_wpfxmlnsv1 token

* Update xml/System.Windows.Markup/TypeExtension.xml

Co-Authored-By: Genevieve Warren <[email protected]>

Author: mairaw

includes/tlasharptla-wpfxmlnsv1-md.md

@@ -294,7 +294,7 @@
       </ReturnValue>
       <Docs>
         <summary>Gets or sets the type name represented by this markup extension.</summary>
-        <value>A string that identifies the type. This string uses the format *prefix*<c>:</c>*className*. (*prefix* is the mapping prefix for an XML namespace, and is only required to reference types that are not mapped to the default XML namespace for WPF ([!INCLUDE[TLA#tla_wpfxmlnsv1](~/includes/tlasharptla-wpfxmlnsv1-md.md)]).</value>
+        <value>A string that identifies the type. This string uses the format *prefix*<c>:</c>*className*. (*prefix* is the mapping prefix for an XML namespace and is only required to reference types that are not mapped to the default XML namespace for WPF (<c>http://schemas.microsoft.com/winfx/2006/xaml/presentation</c>).</value>
         <remarks>To be added.</remarks>
         <exception cref="T:System.ArgumentNullException">Attempted to set to <see langword="null" />.</exception>
       </Docs>

xml/System.Windows.Markup/TypeExtension.xml

@@ -365,7 +365,7 @@
           <format type="text/markdown"><![CDATA[  
   
 ## Remarks  
- From a mapping perspective, the default XML namespace is the XML namespace that is mapped to empty string. In WPF XAML parsing for application purposes, the acting default namespace identifier is [!INCLUDE[TLA#tla_wpfxmlnsv1](~/includes/tlasharptla-wpfxmlnsv1-md.md)], but that value is not explicitly returned by this API.  
+ From a mapping perspective, the default XML namespace is the XML namespace that is mapped to empty string. In WPF XAML parsing for application purposes, the acting default namespace identifier is `http://schemas.microsoft.com/winfx/2006/xaml/presentation`, but that value is not explicitly returned by this API.  
   
  ]]></format>
         </remarks>