Remove trailing whitespace.
diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst
index e5d1781..8596bd0 100644
--- a/Doc/library/sys.rst
+++ b/Doc/library/sys.rst
@@ -327,7 +327,7 @@
The *default* argument allows to define a value which will be returned
if the object type does not provide means to retrieve the size and would
- cause a `TypeError`.
+ cause a `TypeError`.
func:`getsizeof` calls the object's __sizeof__ method and adds an additional
garbage collector overhead if the object is managed by the garbage collector.
@@ -642,7 +642,7 @@
The events have the following meaning:
- ``'call'``
+ ``'call'``
A function is called (or some other code block entered). The
global trace function is called; *arg* is ``None``; the return value
specifies the local trace function.
@@ -704,7 +704,7 @@
prompts of :func:`input`. The interpreter's own prompts
and (almost all of) its error messages go to ``stderr``. ``stdout`` and
``stderr`` needn't be built-in file objects: any object is acceptable as long
- as it has a :meth:`write` method that takes a string argument. (Changing these
+ as it has a :meth:`write` method that takes a string argument. (Changing these
objects doesn't affect the standard I/O streams of processes executed by
:func:`os.popen`, :func:`os.system` or the :func:`exec\*` family of functions in
the :mod:`os` module.)