[minor] missing semicolon in documentation

[Mark Martinec]

Luigi,

> http://www.ijs.si/software/amavisd/release-notes.txt
>    COMPATIBILITY WITH 2.6.4 / 2.6.5 / 2.6.6
>      - when using SQL for logging/penpals:......
>
> In the ALTER TABLE block the second line has no terminating semicolon.
>
> This is really minor, but if someone cutandpastes the block could result in a
> sql error.

Thanks, fixed!

   Mark