Update control-text-input.md

Updating to Power Apps for Windows as this is what's listed in the Microsoft Store submission.

Author: chmoncay

powerapps-docs/maker/canvas-apps/controls/control-text-input.md

@@ -50,7 +50,7 @@ The user can specify data by typing into a text-input control. Depending on how
 
 **[DisabledFill](properties-color-border.md)** – The background color of a control if its **[DisplayMode](properties-core.md)** property is set to **Disabled**.
 
-**EnableSpellCheck** – Whether a text-input control should use the browser spell check function. Windows App doesn't support this property.
+**EnableSpellCheck** – Whether a text-input control should use the browser spell check function. Power Apps for Windows app doesn't support this property.
 
 **[Fill](properties-color-border.md)** – The background color of a control.