fix: Replace "syntax" with "xml" code fences

Used find/replace regex in VS Code
Find:``` syntax(\s\n*)<\?xml
Replace:```xml$1<?xml

windows/configuration/ue-v/uev-application-template-schema-reference.md

@@ -643,7 +643,7 @@ This element defines the settings for a single application or a suite of applica
 
 Here is the SettingsLocationTemplate.xsd file showing its elements, child elements, attributes, and parameters:
 
-``` syntax
+```xml
 <?xml version="1.0" encoding="utf-8"?>
 <xs:schema id="UevSettingsLocationTemplate"
   targetNamespace="http://schemas.microsoft.com/UserExperienceVirtualization/2013A/SettingsLocationTemplate"