Update Documentation/Boundary/BoundarySystemGettingStarted.md

Co-Authored-By: keveleigh <[email protected]>

Author: thalbern

Documentation/Boundary/BoundarySystemGettingStarted.md

@@ -9,7 +9,7 @@ obstacles while wearing a VR headset.
 
 Many Virtual Reality platforms provide an automatic display, for example a white outline 
 superimposed on the virtual world as the user or their controller nears the boundary. The
-Mixed Reality Toolkit's boundary system extends this feature to enable the diplay of an 
+Mixed Reality Toolkit's boundary system extends this feature to enable the display of an 
 outline of the tracked area, a floor plane and other features that can be used to provide
 additional information to users.