Update spec/Section 5 -- Validation.md

Co-authored-by: Benjie <benjie@jemjie.com>

Author: JoviDeCroock

spec/Section 5 -- Validation.md

@@ -605,9 +605,8 @@ validation fails because the fragment spread `...commandFragment(command: SIT)`
 and `...commandFragment(command: DOWN)` are part of the visited selections that
 will be merged.
 
-If both of these spreads would have `$commandOne` or `$commandTwo` as the
-argument-value, it would be allowed as we can be sure that we'd resolve
-identical fields.
+If both of these spreads had used `$commandOne` as the argument value, it would
+be allowed as we can be sure that we'd resolve identical fields.
 
 ### Leaf Field Selections