Fix sys.maxsize docs.
diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst
index 3fc86e4..368bd4c 100644
--- a/Doc/library/sys.rst
+++ b/Doc/library/sys.rst
@@ -367,10 +367,11 @@
.. data:: maxsize
- An integer giving the size of ``Py_ssize_t``. It's usually 2**31-1 on a 32
- bit platform and 2**63-1 on a 64bit platform.
+ An integer giving the maximum value a variable of type :ctype:`Py_ssize_t` can
+ take. It's usually ``2**31 - 1`` on a 32-bit platform and ``2**63 - 1`` on a
+ 64-bit platform.
- ..versionadded:: 3.0
+ .. versionadded:: 3.0
.. data:: maxunicode