MFen: update the Mongolian translation of the Handbook

1.78 -> 1.79 mn_MN.UTF-8/books/handbook/bibliography/chapter.sgml
1.182 -> 1.183 mn_MN.UTF-8/books/handbook/eresources/chapter.sgml
1.364 -> 1.374 mn_MN.UTF-8/books/handbook/install/chapter.sgml
1.127 -> 1.128 mn_MN.UTF-8/books/handbook/multimedia/chapter.sgml

Submitted by: ganbold&at;micom.mng.net