Changed 'must NOT BE' to 'must not be' (#980)

rivantsov · romanivantsov · web-flow · commit edda83613a99 · 2022-12-07T23:49:05.000Z
Co-authored-by: Roman Ivantsov &lt;roman.ivantsov@microsoft.com&gt;
diff --git a/spec/Section 5 -- Validation.md b/spec/Section 5 -- Validation.md
@@ -579,7 +579,7 @@ fragment conflictingDifferingResponses on Pet {
   - If {selectionType} is a scalar or enum:
     - The subselection set of that selection must be empty.
   - If {selectionType} is an interface, union, or object:
-    - The subselection set of that selection must NOT BE empty.
+    - The subselection set of that selection must not be empty.
 
 **Explanatory Text**
 
