Document vector passing to nudge_y/nudge_x/position_nudge (tidyverse#6335)

* Document vector passing to position_nudge

* Put nudge_y into aes call

As discussed in tidyverse#6355.

* Update documentation

* redocument

---------

Co-authored-by: Teun van den Brand <[email protected]>

Author: MaxAtoms

R/position-nudge.R

@@ -27,6 +27,11 @@
 #' ggplot(df, aes(x, y)) +
 #'   geom_point() +
 #'   geom_text(aes(label = y), nudge_y = -0.1)
+#'
+#' # For each text individually
+#' ggplot(df, aes(x, y)) +
+#'   geom_point() +
+#'   geom_text(aes(label = y, nudge_y = c(-0.1, 0.1, -0.1, 0.1)))
 position_nudge <- function(x = NULL, y = NULL) {
   ggproto(NULL, PositionNudge,
     x = x,