Containers: fix manual pictures and reference to immediate refill key

Author: Csantucci

Source/Documentation/Manual/driving.rst

@@ -170,7 +170,7 @@ tank, then the refilling takes place as the key is held down. If the
 locomotive is further away, then the distance to the nearest pickup is 
 shown instead.
 
-Note also that the key ``<Shift+T>`` will provide immediate refill 
+Note also that the key ``<Ctrl+T>`` will provide immediate refill 
 at any time.
 
 Specific Features to Optimize Locomotive Driving

Source/Documentation/Manual/features-rollingstock.rst

@@ -1024,6 +1024,7 @@ container station follows. It can be noted that stack location 0 has a 20ft cont
 its child stack location 10. Same applies to stack location 3 and its child stack location 13.
 
 .. image:: images/features-stack-locations-code.png
+  :scale: 80 %
 
 .. image:: images/features-stack-locations.png