Correct typing.Callable docstring

Author: hyperkai

Lib/typing.py

@@ -2831,15 +2831,15 @@ class Other(Leaf):  # Error reported by type checker
 Callable.__doc__ = \
     """Deprecated alias to collections.abc.Callable.
 
-    Callable[[int], str] signifies a function that takes a single
+    Callable[[int], str] signifies a function that has a single
     parameter of type int and returns a str.
 
-    The subscription syntax must always be used with exactly two
-    values: the argument list and the return type.
-    The argument list must be a list of types, a ParamSpec,
-    Concatenate or ellipsis. The return type must be a single type.
+    The type specification "[]" must have two objects, a parameter
+    type list and return type. The parameter type list must be a list
+    of types, ParamSpec, Concatenate or ellipsis "...".
+    The return type must be a single type.
 
-    There is no syntax to indicate optional or keyword arguments;
+    There is no syntax to indicate optional or keyword parameters;
     such function types are rarely used as callback types.
     """
 AbstractSet = _alias(collections.abc.Set, 1, name='AbstractSet')