docs(dom): fix typo where vdom$ was redeclared
docs(dom): fix typo where vdom$ was redeclared

usm4n/cyclejs,ntilwalli/cyclejs,cyclejs/cyclejs,cyclejs/cyclejs,ntilwalli/cyclejs,ntilwalli/cyclejs,usm4n/cyclejs,staltz/cycle,feliciousx-open-source/cyclejs,cyclejs/cycle-core,feliciousx-open-source/cyclejs,cyclejs/cycle-core,feliciousx-open-source/cyclejs,usm4n/cyclejs,staltz/cycle,cyclejs/cyclejs,feliciousx-open-source/cyclejs,ntilwalli/cyclejs,cyclejs/cyclejs,usm4n/cyclejs