Kirill Smelkov patch 4/9: doc should say %dhist instead %ds"

doc/manual_base.lyx

@@ -2299,7 +2299,7 b' IPython comes with some pre-defined aliases and a complete system for changing'
 \family default 
  and 
 \family typewriter 
-%ds
+%dhist
 \family default 
 ) and via direct 
 \family typewriter