Fix example in stores guide.
Fix example in stores guide.

Thanks, @solomonhawk!
leobauza/microcosm,vigetlabs/microcosm,despairblue/microcosm,leobauza/microcosm,despairblue/microcosm,vigetlabs/microcosm,leobauza/microcosm,vigetlabs/microcosm