fix space

Author: tony

CHANGES

@@ -11,7 +11,7 @@ Here you can find the recent changes to tmuxp.
 - [internal] move old :class:`Server` methods ``__list_panes()``,
   ``__list_windows`` and ``__list_sessions`` into the single underscore.
 - [cli] Support for spaces in ``$ tmuxp attach-session`` and
-  ``$ tmuxp kill-session``, and `` $ tmuxp freeze``.
+  ``$ tmuxp kill-session``, and ``$ tmuxp freeze``.
 
 2013-11-01
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