Remove trailing whitespace.
diff --git a/Doc/library/profile.rst b/Doc/library/profile.rst
index 1bf1501..132365a 100644
--- a/Doc/library/profile.rst
+++ b/Doc/library/profile.rst
@@ -51,15 +51,15 @@
 
 The Python standard library provides two different profilers:
 
-#. :mod:`cProfile` is recommended for most users; it's a C extension 
+#. :mod:`cProfile` is recommended for most users; it's a C extension
    with reasonable overhead
-   that makes it suitable for profiling long-running programs. 
+   that makes it suitable for profiling long-running programs.
    Based on :mod:`lsprof`,
-   contributed by Brett Rosen and Ted Czotter.  
+   contributed by Brett Rosen and Ted Czotter.
 
 #. :mod:`profile`, a pure Python module whose interface is imitated by
-   :mod:`cProfile`.  Adds significant overhead to profiled programs. 
-   If you're trying to extend 
+   :mod:`cProfile`.  Adds significant overhead to profiled programs.
+   If you're trying to extend
    the profiler in some way, the task might be easier with this module.
    Copyright © 1994, by InfoSeek Corporation.
 
@@ -260,24 +260,24 @@
    that the text string in the far right column was used to sort the output. The
    column headings include:
 
-   ncalls 
+   ncalls
       for the number of calls,
 
-   tottime 
+   tottime
       for the total time spent in the given function (and excluding time made in calls
       to sub-functions),
 
-   percall 
+   percall
       is the quotient of ``tottime`` divided by ``ncalls``
 
-   cumtime 
+   cumtime
       is the total time spent in this and all subfunctions (from invocation till
       exit). This figure is accurate *even* for recursive functions.
 
-   percall 
+   percall
       is the quotient of ``cumtime`` divided by primitive calls
 
-   filename:lineno(function) 
+   filename:lineno(function)
       provides the respective data of each function
 
    When there are two numbers in the first column (for example, ``43/3``), then the