fix example

Author: strengejacke

R/check_group_variation.R

@@ -48,7 +48,7 @@
 #' )
 #' check_group_variation(
 #'   dat,
-#'   select = c("between_num", "innen_num", "within_num", "both_num"),
+#'   select = c("between_num", "within1_num", "within2_num", "both_num"),
 #'   by = "id"
 #' )
 #' @export