fix typos in doc/wmii.tex
fix typos in doc/wmii.tex

sigmavirus24/wmii,jerluc/wmii,sigmavirus24/wmii,jerluc/wmii,darkfeline/wmii,jerluc/wmii,Sirikid/wmii,sigmavirus24/wmii,rvedam/wmii,rvedam/wmii,rvedam/wmii,wingyplus/wmii,wingyplus/wmii,rvedam/wmii,wingyplus/wmii,darkfeline/wmii,rvedam/wmii,jerluc/wmii,Sirikid/wmii,wingyplus/wmii,jerluc/wmii,darkfeline/wmii,Sirikid/wmii,darkfeline/wmii,Sirikid/wmii,Sirikid/wmii,darkfeline/wmii,sigmavirus24/wmii,wingyplus/wmii,sigmavirus24/wmii