Update README.md

Author: guFalcon

README.md

@@ -106,7 +106,7 @@ protected override void UnloadContent()
 Maybe you've heard of such a data-structure that does essentially exactly the same things as this grid with one major difference:  
 
 The QuadTree divides the space all by itself, dynamically whenever you add new items.  
-It doesn't need a fixed uniform grid, but divides it unevenly and only when another partition is needed.  
+It doesn't need a fixed uniform grid, but divides space unevenly and only when another partition is needed.  
 And that's good and bad at the same time.
 The goog thing is that it can cope with unevenly distributed items.
 The bad thing is that it costs a lot more time (the updating of this data-structure); At least when compared to the grid.