revised changeset description

.changeset/wise-yaks-switch.md

@@ -5,4 +5,4 @@
 
 Fixed a bug that `__typename` with applied directives gets lost in fetch operations.
 
-The query planner uses a technique called sibling typename optimization to simplify operations by folding __typename selections into a sibling selection. However, that optimization does not account for applied directives or aliasing. The bug was applying it even if the `__typename` has directives applied. `__typename` with directives (or alias) are now excluded from the optimization.
+The sibling typename optimization used by query planner simplifies operations by folding `__typename` selections into their sibling selections. However, that optimization does not account for directives or aliases. The bug was applying the optimization even if the `__typename` has directives on it, which caused the selection to lose its directives. Now, `__typename` with directives (or aliases) are excluded from the optimization.