Update Architecture.md

correct 2 small mistake

docs/Architecture.md

@@ -4,7 +4,7 @@
 I get a lot of questions about architecture and how to unit tests plugins. So here are some things to be aware of for any plugin that I publish.
 
 ### What's with this .Current Global Variable? Why can't I use $FAVORITE_IOC_LIBARY
-You totally can! Every plugin I create is based on an interface. The static singleton just gives you a super simple way of gaining access to the platform implementation. Realize that the implementation of the plugin lives in your iOS, Android, Windows, etc. Thies means you will need to register it there by instantiating a `Cross___Implementation` from the platform specific projects.
+You totally can! Every plugin I create is based on an interface. The static singleton just gives you a super simple way of gaining access to the platform implementation. Realize that the implementation of the plugin lives in your iOS, Android, Windows, etc. This means you will need to register it there by instantiating a `Cross___Implementation` from the platform specific projects.
 
 If you are using a ViewModel/IOC approach your code may look like:
 
@@ -51,7 +51,7 @@ public async Task<bool> MakePurchase()
 }
 ```
 
-It is recommended to not us a using statement, but instead just call the single `Dispose` on the static class, which will also dispose the `Current`:
+It is recommended to not use a using statement, but instead just call the single `Dispose` on the static class, which will also dispose the `Current`:
 
 ```csharp
 public async Task<bool> MakePurchase()