Merge pull request unoplatform#15099 from Youssef1313/uwp-conversion-doc

docs: Update uwp-conversion.md

doc/articles/uno-development/uwp-conversion.md

@@ -4,7 +4,7 @@ uid: Uno.Contributing.UWPConversion
 
 # Converting the source tree to UWP
 
-The current Uno.UI source tree is based on WinUI, and the CI uses a specific step to generate the UWP compatible API set, and the associated packages.
+The current Uno Platform source tree is based on WinUI, and the CI uses a specific step to generate the UWP compatible API set and the associated packages.
 
 ## Using the auto-generated synchronized branch
 
@@ -17,13 +17,13 @@ You can checkout this branch locally to get started faster.
 The conversion process is done as follows, from a clean repository:
 
 - The `Uno.WinUIRevert` is removing and moving folders from the WinUI structure to adjust to the UWP structure
-- The `Uno.WinUISyncGenerator` is run to regenerate the whole WinRT/UWP 3.0 API set
+- The `Uno.UWPSyncGenerator` is run to regenerate the whole WinRT/UWP API set
 - A set of nuspec conversions are performed in `build\Uno.UI.Build.csproj` in the `BuildNuGetPackage` target
 
 To ease the adjustments when conversion issues arise:
 
-- The `UNO_UWP_BUILD` msbuild variable is set to `true` when the tree is "UWP" mode, and undefined when the tree is in UWP mode.
-- The `HAS_UNO_UWP` C# constant is defined when the tree is built in UWP mode.
+- The `UNO_UWP_BUILD` MSBuild property is set to `true` when the tree is "UWP" mode, and set to `false` when the tree is in WinUI mode.
+- The `HAS_UNO_WinUI` C# constant is defined when the tree is built in WinUI mode.
 
 ## Converting a local source tree