Tracking allocator clarification.

content/docs/overview.md

@@ -3133,7 +3133,7 @@ For more information regarding memory allocation strategies in general, please s
 
 #### Tracking allocator
 
-Odin comes with a built in tracking allocator that lets you see if your progarm is leaking memory and when it does bad frees. Here's how to set it up:
+In the core collection you'll find a tracking allocator that warns you if your progarm is leaking memory or if it does bad frees. Here's how to set it up:
 ```odin
 package main