testtools/matchers.py: fix a comment typo

diff --git a/lib/testtools/testtools/matchers.py b/lib/testtools/testtools/matchers.py
index 3279306650e57fda9471de8c5bc727998fa6b6e8..3ea47d80e7fc9f4999096363ed9c451a170d23b5 100644 (file)
--- a/lib/testtools/testtools/matchers.py
+++ b/lib/testtools/testtools/matchers.py
@@ -642,7 +642,7 @@ class MatchesException(Matcher):
 
 
 class Contains(Matcher):
-    """Checks whether something is container in another thing."""
+    """Checks whether something is contained in another thing."""
 
     def __init__(self, needle):
         """Create a Contains Matcher.