Update formatting

Author: leebyron

spec/Section 3 -- Type System.md

@@ -1341,8 +1341,9 @@ objects have a separate type in the system.
 
 **Circular References**
 
-Input Objects are allowed to reference other Input Objects. A circular reference occurs
-when an Input Object references itself either directly or through subordinated Input Objects.
+Input Objects are allowed to reference other Input Objects. A circular reference 
+occurs when an Input Object references itself either directly or through 
+referenced Input Objects.
 
 Circular references are generally allowed, however they may not be defined as an
 unbroken chain of Non-Null fields. Such Input Objects are invalid, because there
@@ -1467,9 +1468,9 @@ Literal Value            | Variables               | Coerced Value
       characters {"__"} (two underscores).
    3. The input field must accept a type where {IsInputType(inputFieldType)}
       returns {true}.
-3. If an Input Object references itself either directly or through subordinated
-   Input Objects, one of the fields in the chain of references must be either nullable
-   or a List.
+3. If an Input Object references itself either directly or through referenced
+   Input Objects, one of the fields in the chain of references must be either 
+   nullable or a List.
 
 ### Input Object Extensions