This function is for internal use by racedata and raceinfo to convert
the race identifier into a URL to be passed into the HTML request of the webscraping procedure.
Details
The race parameter accepts the following inputs:
"tdf"(Tour de France)"giro"(Giro d'Italia)"vuelta"(La Vuelta ciclista a España)"dauphine"(Critérium du Dauphiné)"suisse"(Tour de Suisse)"tirreno"(Tirreno-Adriatico)"parisnice"(Paris-Nice)"romandie"(Tour de Romandie)"catalunya"(Volta Ciclista a Catalunya)"pologne"(Tour de Pologne)"basque"(Itzulia Basque Country)