Changed from matches to route subcommand matches

[jspspike]

Fixes #1216.
Using example wrangler.toml from issue above:

name = "test-route"
type = "javascript"
account_id = ""
workers_dev = true
route = ""
zone_id = ""

[env.production]
account_id = "1516XXXX"
zone_id = "9c08XXXXX"

Before running wrangler route list --env production would result in:
Error: You must specify a zone_id in your configuration file to use 'wrangler route' commands.
Now gets:

Error:  Code 7003: Could not route to /zones/9c08XXXXX/workers/routes, perhaps your object identifier is invalid?
 Code 7000: No route for that URI