Add space missing between operating and system

docs/scenarios/admin.rst

@@ -290,7 +290,7 @@ Here is an example of 'Hello World' in Puppet.
         #the notification message by default.
     }
 
-Here is another example with system based logic. Note how the operatingsystem
+Here is another example with system based logic. Note how the operating system
 fact is being used as a variable prepended with the ``$`` sign. Similarly, this
 holds true for other facts such as hostname which can be referenced by
 ``$hostname``