theme: switch peaksea to desert
theme: switch peaksea to desert

Signed-off-by: Qiwu Huang <35e48bafa615f7ae97409b2658d6111e6f0d5dba@xiaomi.com>

ivan19871002/vimrc,ivan19871002/vimrc,ivan19871002/vimrc,ivan19871002/vimrc