chore(docs): Add "collapsible" terminology into QExpansionItem page
chore(docs): Add "collapsible" terminology into QExpansionItem page

rstoenescu/quasar-framework,pdanpdan/quasar,rstoenescu/quasar-framework,fsgiudice/quasar,quasarframework/quasar,pdanpdan/quasar,quasarframework/quasar,pdanpdan/quasar,fsgiudice/quasar,quasarframework/quasar,rstoenescu/quasar-framework,quasarframework/quasar,pdanpdan/quasar,fsgiudice/quasar