From 30883624a4ebdadca7b9ccf958501bd368f27c61 Mon Sep 17 00:00:00 2001
From: Amintor Dusko <87949283+AmintorDusko@users.noreply.github.com>
Date: Mon, 20 Jun 2022 12:57:52 -0400
Subject: [PATCH] update documentation (#2750)

---
 pennylane/ops/qubit/observables.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pennylane/ops/qubit/observables.py b/pennylane/ops/qubit/observables.py
index 29979c8bb16..4bc1a196225 100644
--- a/pennylane/ops/qubit/observables.py
+++ b/pennylane/ops/qubit/observables.py
@@ -173,7 +173,7 @@ def diagonalizing_gates(self):
 
 class SparseHamiltonian(Observable):
     r"""
-    A Hamiltonian represented directly as a sparse matrix in coordinate list (COO) format.
+    A Hamiltonian represented directly as a sparse matrix in Compressed Sparse Row (CSR) format.
 
     .. warning::