Returns the URLs for season leagues of a selected country
fb_league_urls(country, gender, season_end_year, tier = "1st")the three character country code
gender of competition, either "M" or "F"
the year the season(s) concludes (defaults to all available seasons)
the tier of the league, ie '1st' for the EPL or '2nd' for the Championship and so on
returns a character vector of all fbref league URLs for selected country, season, gender and tier
# \donttest{
fb_league_urls(country = "ENG", gender = "M", season_end_year = 2021, tier = '1st')
#> [1] "https://fbref.com/en/comps/9/10728/2020-2021-Premier-League-Stats"
# }