Update BUILDING.md

Author: d2dyno1

BUILDING.md

@@ -12,13 +12,14 @@ Running this command will clone the repository with all submodules into the curr
   - .NET 7 SDK
   - Windows 11 SDK (10.0.22621.0)
   - MSVC v143 - VS 2022 C++ x64/x86 or ARM64 build tools (latest)
+- [Single-project MSIX Packaging Tools for VS 2022](https://marketplace.visualstudio.com/items?itemName=ProjectReunion.MicrosoftSingleProjectMSIXPackagingToolsDev17) extension
 - [Windows App SDK](https://learn.microsoft.com/en-us/windows/apps/windows-app-sdk/downloads#current-releases)
 
 ### 2. Preparing workload
-- Open SecureFolderFS.sln file which will launch Visual Studio.
+- Open the SecureFolderFS.sln file which will launch Visual Studio.
 - Ensure that the following build settings match your configuration (toolbar):
   - x64, x86, arm64 depending on your processor's architecture
-  - Startup project set to SecureFolderFS.WinUI (You can change the startup project by opening Solution Explorer > Right click SecureFolderFS.WinUI > "Set as startup project"
+  - Startup project set to SecureFolderFS.WinUI (You can change the startup project by opening Solution Explorer > Right-click SecureFolderFS.WinUI > "Set as startup project"
   ![image](https://user-images.githubusercontent.com/53011783/216186419-aed03f32-565a-469d-9815-b7ea9206bf57.png)
 
 ## Building AvaloniaUI
@@ -29,10 +30,10 @@ Running this command will clone the repository with all submodules into the curr
 
 ### 2. Preparing workload
 #### Building with Visual Studio 2022
-  - Open SecureFolderFS.sln file which will launch Visual Studio
+  - Open the SecureFolderFS.sln file which will launch Visual Studio
   - Ensure that the following build settings match your configuration (toolbar):
     - Selected "Any CPU"
-    - Startup project set to SecureFolderFS.AvaloniaUI (You can change the startup project by opening Solution Explorer > Right click SecureFolderFS.AvaloniaUI > "Set as startup project"<br/>
+    - Startup project set to SecureFolderFS.AvaloniaUI (You can change the startup project by opening Solution Explorer > Right-click SecureFolderFS.AvaloniaUI > "Set as startup project"<br/>
     ![image](https://user-images.githubusercontent.com/53011783/216189292-474db056-0e3b-419d-baae-e86e27b7a7e7.png)
 
 #### Building with Rider
@@ -51,7 +52,7 @@ Open a terminal window and paste the following command:
 dotnet build SecureFolderFS.AvaloniaUI
 ```
 
-To build Release version of the app, modify the command as follows:
+To build the Release version of the app, modify the command as follows:
 ```ps
 dotnet build SecureFolderFS.AvaloniaUI -c Release
 ```