Update spec/Appendix B -- Grammar Summary.md

twof · benjie · twof · commit 4743051979d8 · 2022-03-15T00:44:33.000-07:00
Co-authored-by: Benjie Gillam &lt;benjie@jemjie.com&gt;
diff --git a/spec/Appendix B -- Grammar Summary.md b/spec/Appendix B -- Grammar Summary.md
@@ -160,7 +160,9 @@ Field : Alias? Name Arguments? Nullability? Directives? SelectionSet?
 
 Alias : Name :
 
-Nullability : (`?`|`!`)
+Nullability :
+  - !
+  - ?
 
 Arguments[Const] : ( Argument[?Const]+ )
 
