Update satellite/payments/coinpayments/utils.go

Co-Authored-By: Ivan Fraixedes <ifcdev@gmail.com>

satellite/payments/coinpayments/utils.go

@@ -14,7 +14,7 @@ var ErrNoAuthorizationKey = Error.New("no authorization key")
 
 // GetTransacationKeyFromURL parses provided raw url string
 // and extracts authorization key from it. Returns ErrNoAuthorizationKey if
-// there is no authorization key.
+// there is no authorization key and error if rawurl cannot be parsed.
 func GetTransacationKeyFromURL(rawurl string) (string, error) {
 	u, err := url.Parse(rawurl)
 	if err != nil {