docs: standardize Magellan as a proper noun
docs: standardize Magellan as a proper noun

In most of the documentation, Magellan is referenced as a proper noun. In the _Browser history_ section, however, it was referenced as a common noun. I've updated it to be consistently treated as a proper noun, with a capital "M" and no article (e.g., "Magellan" not "the magellan").
DaSchTour/foundation-sites,DaSchTour/foundation-sites