Update doc/releases/changelog-dev.md

Co-authored-by: Jay Soni <[email protected]>

Author: albi3ro

doc/releases/changelog-dev.md

@@ -296,7 +296,7 @@
   and the diagonalising gates using the factors/summands instead of using the full matrix.
   [(#3022)](https://github.com/PennyLaneAI/pennylane/pull/3022)
 
-* `qml.grouping.is_pauli_word` now returns `False` for non-Observables, instead of raising an error.
+* `qml.grouping.is_pauli_word` now returns `False` for operators that don't inherit from `qml.Observable`, instead of raising an error.
   [(#3039)](https://github.com/PennyLaneAI/pennylane/pull/3039)
 
 <h3>Breaking changes</h3>