close Roswell example quote in README.md
close Roswell example quote in README.md

Trivial edit to close an example quotation of a hypothetical journalist communication to a StrongBox contact.
chadmiller/securedrop,harlo/securedrop,GabeIsman/securedrop,jrosco/securedrop,kelcecil/securedrop,conorsch/securedrop,micahflee/securedrop,heartsucker/securedrop,jaseg/securedrop,kelcecil/securedrop,jeann2013/securedrop,jrosco/securedrop,heartsucker/securedrop,ehartsuyker/securedrop,jrosco/securedrop,GabeIsman/securedrop,chadmiller/securedrop,jaseg/securedrop,conorsch/securedrop,pwplus/securedrop,mark-in/securedrop-prov-upstream,ageis/securedrop,GabeIsman/securedrop,harlo/securedrop,pwplus/securedrop,GabeIsman/securedrop,ehartsuyker/securedrop,jrosco/securedrop,conorsch/securedrop,ehartsuyker/securedrop,harlo/securedrop,jaseg/securedrop,garrettr/securedrop,jeann2013/securedrop,micahflee/securedrop,chadmiller/securedrop,micahflee/securedrop,ageis/securedrop,jeann2013/securedrop,kelcecil/securedrop,conorsch/securedrop,kelcecil/securedrop,garrettr/securedrop,kelcecil/securedrop,ageis/securedrop,chadmiller/securedrop,jaseg/securedrop,pwplus/securedrop,garrettr/securedrop,ehartsuyker/securedrop,jeann2013/securedrop,ehartsuyker/securedrop,mark-in/securedrop-prov-upstream,mark-in/securedrop-prov-upstream,garrettr/securedrop,mark-in/securedrop-prov-upstream,pwplus/securedrop,jeann2013/securedrop,harlo/securedrop,jaseg/securedrop,heartsucker/securedrop,jrosco/securedrop,ageis/securedrop,heartsucker/securedrop,ehartsuyker/securedrop,jeann2013/securedrop,micahflee/securedrop,kelcecil/securedrop,jaseg/securedrop,jrosco/securedrop,chadmiller/securedrop,harlo/securedrop,pwplus/securedrop,GabeIsman/securedrop,pwplus/securedrop,conorsch/securedrop,harlo/securedrop,chadmiller/securedrop,GabeIsman/securedrop,heartsucker/securedrop