gh-120572: add missing parentheses in TypeIs documentation (#120573)

diff --git a/Doc/library/typing.rst b/Doc/library/typing.rst
index 94de64fcf835fc762504126b7189a534198d0098..bf0ff9bd348553ad01ddbd7c597b55f83e1610ee 100644 (file)
--- a/Doc/library/typing.rst
+++ b/Doc/library/typing.rst
@@ -1454,8 +1454,8 @@ These can be used as types in annotations. They all support subscription using
    to write such functions in a type-safe manner.
 
    If a ``TypeIs`` function is a class or instance method, then the type in
-   ``TypeIs`` maps to the type of the second parameter after ``cls`` or
-   ``self``.
+   ``TypeIs`` maps to the type of the second parameter (after ``cls`` or
+   ``self``).
 
    In short, the form ``def foo(arg: TypeA) -> TypeIs[TypeB]: ...``,
    means that if ``foo(arg)`` returns ``True``, then ``arg`` is an instance