Fix typo in assertSequenceEqual docstring.
diff --git a/Lib/unittest/case.py b/Lib/unittest/case.py
index 2ebf2da..db51e6d 100644
--- a/Lib/unittest/case.py
+++ b/Lib/unittest/case.py
@@ -505,7 +505,7 @@
def assertSequenceEqual(self, seq1, seq2, msg=None, seq_type=None):
"""An equality assertion for ordered sequences (like lists and tuples).
- For the purposes of this function, a valid orderd sequence type is one
+ For the purposes of this function, a valid ordered sequence type is one
which can be indexed, has a length, and has an equality operator.
Args: