Update automating-midi---pitch-bending-and-aftertouch.html: plural

include/automating-midi---pitch-bending-and-aftertouch.html

@@ -16,7 +16,7 @@
 </p>
 
 <p>
-  Using the Draw tool, as for all the automation, allows to create a gradual
+  Using the Draw tool, as for all the automations, allows to create a gradual
   change from one drawn point to another. A line in the center produces no
   change to the pitch, while a line above the center will bend the pitch to a
   higher note and a line going under the middle will bend the pitch to a lower note.