[doc] fix assertLength doc

Change-Id: I2f859f901f4eb00e6f3b1f0ee9c0c626c59fa73f
---
M tests/aspects.py
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/aspects.py b/tests/aspects.py
index 5c25e59..91fef62 100644
--- a/tests/aspects.py
+++ b/tests/aspects.py
@@ -78,7 +78,7 @@
             self.fail(msg)
 
     def assertLength(self, seq, other, msg=None):
-        """Verify that a sequence expr has the length of other."""
+        """Verify that a sequence seq has the length of other."""
         # the other parameter may be given as a sequence too
         self.assertIsInstance(
             seq, Sized, 'seq argument is not a Sized class containing __len__')

