bug#2214: Typo in ada-mode info

[Arni Magnusson]

There's a minor typo in emacs-22.3/info/ada-mode, where

  Ada.Text_IO.Put_Line ("hello from hello.adb"):

should be

  Ada.Text_IO.Put_Line ("hello from hello.adb");

ending with a semicolon.

Cheers,

Arni