Remove trailing whitespace.
diff --git a/Doc/library/trace.rst b/Doc/library/trace.rst
index 05d5d66..f79d7e5 100644
--- a/Doc/library/trace.rst
+++ b/Doc/library/trace.rst
@@ -65,13 +65,13 @@
 
 :option:`--ignore-module`
    Accepts comma separated list of module names. Ignore each of the named
-   module and its submodules (if it is a package).  May be given 
+   module and its submodules (if it is a package).  May be given
    multiple times.
 
 :option:`--ignore-dir`
    Ignore all modules and packages in the named directory and subdirectories
    (multiple directories can be joined by os.pathsep).  May be given multiple
-   times. 
+   times.
 
 
 .. _trace-api: