updated readme to new package icon location
updated readme to new package icon location

AdmiringWorm/chocolatey-coreteampackages,octomike/chocolatey-coreteampackages,lennartb-/chocolatey-coreteampackages,octomike/chocolatey-coreteampackages,lennartb-/chocolatey-coreteampackages,ebugusey/chocolatey-coreteampackages,AdmiringWorm/chocolatey-coreteampackages,ebugusey/chocolatey-coreteampackages