Update casting-c-cx.md

Author: jaigak

docs/cppcx/casting-c-cx.md

@@ -87,7 +87,7 @@ ComPtr<IInspectable> inspectable = reinterpret_cast<IInspectable*>(winRtObject);
 // ...
 ```
 
-If you use **`reinterpret_cast`** to convert from oneWindows Runtime interface to another, you cause the object to be released twice. Therefore, only use this cast when you are converting to a non-C++ component extensions interface.
+If you use **`reinterpret_cast`** to convert from one Windows Runtime interface to another, you cause the object to be released twice. Therefore, only use this cast when you are converting to a non-C++ component extensions interface.
 
 ## ABI types