Spell check

Author: magicmark

spec/Section 3 -- Type System.md

@@ -2262,7 +2262,7 @@ fewer {Name} token that syntactically contains it. Specifically:
 - {DirectiveArgumentCoordinate} has a {DirectiveCoordinate} containing element.
 - {TypeCoordinate} and {DirectiveCoordinate} have no containing element.
 
-A _schema coordinate_ is always unique. Each non-metafield _schema element_ can
+A _schema coordinate_ is always unique. Each non meta-field _schema element_ can
 be referenced by exactly one possible schema coordinate.
 
 A _schema coordinate_ may refer to either a defined or built-in _schema