improve sits_cube documentation

Author: M3nin0

R/sits_cube.R

@@ -201,7 +201,7 @@
 #'     # --- Access to Digital Earth Africa
 #'     # create a raster cube file based on the information about the files
 #'     # DEAFRICA does not support definition of tiles
-#'     cube_dea <- sits_cube(
+#'     cube_deafrica <- sits_cube(
 #'         source = "DEAFRICA",
 #'         collection = "SENTINEL-2-L2A",
 #'         bands = c("B04", "B08"),
@@ -302,10 +302,10 @@
 #'         source = "TERRASCOPE",
 #'         collection = "WORLD-COVER-2021",
 #'         roi = c(
-#'             lon_min = 137.15991,
-#'             lon_max = 138.18467,
-#'             lat_min = -33.85777,
-#'             lat_max = -32.56690
+#'             lon_min = -62.7,
+#'             lon_max = -62.5,
+#'             lat_min = -8.83,
+#'             lat_max = -8.70
 #'         )
 #'     )
 #'     # --- Create a cube based on a local MODIS data