Update graph/articles/coreTypes.md

Co-authored-by: Garrett DeBruin <[email protected]>

Author: tylercleveland2

graph/articles/coreTypes.md

@@ -2,7 +2,7 @@
 
 ## Overview
 
-Types exist in graph which are highly-connected/central to the graph ecosystem. Often, these types are the position of containing many structural properties relevant to other APIs, because they are connected to many entities in the graph.
+Types exist in graph which are highly-connected/central to the graph ecosystem. Often, these types are in the position of containing many structural properties relevant to other APIs, because they are connected to many entities in the graph.
 
 Structural properties should be only added to these core types when they are properties of the entity itself and strictly not for the purpose of convenience due to the entity's position in the graph.