[Dovecot] Man page: LGPL Version

[Oli Schacher]

Hi Timo

http://hg.dovecot.org/dovecot-2.2/rev/1f3f21081ee5 : man pages: Updated
v2.1 -> v2.2  

dovecot.1.in now references a inexistent "LGPLv2.2" instead of
"LGPLv2.1"