Performance-and-memory-optimization.md

@@ -57,7 +57,7 @@ But later once using the *BufferGeometry* versions of the primitives I realized
 
 (memory) `PENDING`
 
-### Optimize the operations with single or few structure elements
+### Optimizing the operations with single or few structure elements
 
 Examples: change the position of an atom, remove an atom, etc.