Fix formatting issue in lock.rst

Author: rvanlaak

components/lock.rst

@@ -401,7 +401,7 @@ Store                                                       Scope   Blocking  Ex
 :ref:`ZookeeperStore <lock-store-zookeeper>`                remote  retry     no       no      no
 ==========================================================  ======  ========  ======== ======= =============
 
-When the store does not support blocking locks, the Lock class will retry to acquire 
+When the store does not support blocking locks, the Lock class will retry to acquire
 the lock in a non-blocking way until the lock is acquired.
 
 .. tip::