Missing maximum value (1) for current_fuel_percent

[hbruch]

GBFS spec defines current_fuel_percent as current percentage, expressed from 0 to 1.

However, the json schema only declares a minimum of 0, but not a maximum of 1.

In consequence, feed providers don't receive appropriate feedback, in case they report current_fuel_percent in the range from 0 to 100, as it is currently the case for e.g. this feed: the gbfs-validator reports free_bike_status.jsonas valid.

gbfs-json-schema/v3.1-RC/vehicle_status.json

Lines 96 to 100 in 6c1e66c

	"current_fuel_percent": {
	"description": "This value represents the current percentage, expressed from 0 to 1, of fuel or battery power remaining in the vehicle. Added in v2.3-RC.",
	"type": "number",
	"minimum": 0
	},

As this new validation is only a change in the existing schemas, but not in the spec itself, I suggest to add it to the schemas of older versions as well.