Restore `viewBox` to Prism logo (#1002)
Restore `viewBox` to Prism logo (#1002)

* Restore `viewBox` to Prism logo

* Remove the line break

PrismJS/prism,MakeNowJust/prism,byverdu/prism,mAAdhaTTah/prism,byverdu/prism,aviaryan/prism,MakeNowJust/prism,CupOfTea696/prism,MakeNowJust/prism,PrismJS/prism,aviaryan/prism,byverdu/prism,PrismJS/prism,byverdu/prism,CupOfTea696/prism,mAAdhaTTah/prism,aviaryan/prism,CupOfTea696/prism,aviaryan/prism,aviaryan/prism,MakeNowJust/prism,byverdu/prism,MakeNowJust/prism,PrismJS/prism,mAAdhaTTah/prism,mAAdhaTTah/prism,mAAdhaTTah/prism,CupOfTea696/prism,PrismJS/prism,CupOfTea696/prism