Add some sentence endings.
diff --git a/Misc/NEWS b/Misc/NEWS
index 25a21bd..4fd972a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -68,7 +68,7 @@
 
 - os.path.walk is deprecated in favor of os.walk.
 
-- pdb gained the "until" command
+- pdb gained the "until" command.
 
 Build
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