From 4e728bbcf5f47e685d0085e5a31bf4679c720f9a Mon Sep 17 00:00:00 2001
From: Renato Mello <renato.msf@gmail.com>
Date: Thu, 12 Oct 2023 10:55:52 +0400
Subject: [PATCH] fix docstring

---
 src/qibo/backends/abstract.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/qibo/backends/abstract.py b/src/qibo/backends/abstract.py
index 14d1dc752c..a00613e2e0 100644
--- a/src/qibo/backends/abstract.py
+++ b/src/qibo/backends/abstract.py
@@ -342,7 +342,7 @@ def calculate_overlap(self, state1, state2):  # pragma: no cover
 
     @abc.abstractmethod
     def calculate_overlap_density_matrix(self, state1, state2):  # pragma: no cover
-        """Calculate norm of two density matrices."""
+        """Calculate overlap of two density matrices."""
         raise_error(NotImplementedError)
 
     @abc.abstractmethod