fixed typo

docsite/rst/playbooks_strategies.rst

@@ -3,7 +3,7 @@ Strategies
 
 In 2.0 we added a new way to control play execution, ``strategy``, by default plays will
 still run as they used to, with what we call the ``linear`` strategy. All hosts will run each
-task befor any host starts the next task, using the number of forks (default 5) to parallelize.
+task before any host starts the next task, using the number of forks (default 5) to parallelize.
 
 The ``serial`` directive can 'batch' this behaviour to a subset of the hosts, which then run to
 completion of the play before the next 'batch' starts.