Tweak docstring for %recall.

Closes gh-932

IPython/core/history.py

@@ -858,8 +858,9 b" def magic_history(self, parameter_s = ''):"
 
 
 def magic_rep(self, arg):
-    r"""Repeat a command, or get command to input line for editing. %recall and
-    %rep are equivalent.
+    r"""Repeat a command, or get command to input line for editing.
+    
+    %recall and %rep are equivalent.
 
     - %recall (no arguments):