assign_label() gives wrong message

[jmbarbone]

Should be "assign_labels()"

This should get deprecated anyway.

library(mark)

x <- 1
assign_label(x, 2)
#> Warning: 'assign_label' is deprecated.
#> Use 'assign_label' instead.
#> See help("Deprecated")
#> [1] 1
#> attr(,"label")
#> [1] 2

^{Created on 2022-01-13 by the reprex package (v2.0.1)}