Fix typos in documentation and comments
diff --git a/Lib/test/test_argparse.py b/Lib/test/test_argparse.py
index 915e989..83f6f27 100644
--- a/Lib/test/test_argparse.py
+++ b/Lib/test/test_argparse.py
@@ -548,7 +548,7 @@
 
 
 class TestOptionalsNargs1(ParserTestCase):
-    """Tests specifying the 1 arg for an Optional"""
+    """Tests specifying 1 arg for an Optional"""
 
     argument_signatures = [Sig('-x', nargs=1)]
     failures = ['a', '-x']
@@ -559,7 +559,7 @@
 
 
 class TestOptionalsNargs3(ParserTestCase):
-    """Tests specifying the 3 args for an Optional"""
+    """Tests specifying 3 args for an Optional"""
 
     argument_signatures = [Sig('-x', nargs=3)]
     failures = ['a', '-x', '-x a', '-x a b', 'a -x', 'a -x b']
@@ -593,7 +593,7 @@
 
 
 class TestOptionalsNargsZeroOrMore(ParserTestCase):
-    """Tests specifying an args for an Optional that accepts zero or more"""
+    """Tests specifying args for an Optional that accepts zero or more"""
 
     argument_signatures = [
         Sig('-x', nargs='*'),
@@ -612,7 +612,7 @@
 
 
 class TestOptionalsNargsOneOrMore(ParserTestCase):
-    """Tests specifying an args for an Optional that accepts one or more"""
+    """Tests specifying args for an Optional that accepts one or more"""
 
     argument_signatures = [
         Sig('-x', nargs='+'),
@@ -1232,7 +1232,7 @@
 
 
 class TestNargsZeroOrMore(ParserTestCase):
-    """Tests specifying an args for an Optional that accepts zero or more"""
+    """Tests specifying args for an Optional that accepts zero or more"""
 
     argument_signatures = [Sig('-x', nargs='*'), Sig('y', nargs='*')]
     failures = []