fix: correct pipe precedence docs — |> binds tighter than +

R's |> has higher precedence than +, so parentheses ARE required
around the ggplot chain before piping to civilytics_logo():

  (ggplot(df, aes(x, y)) + geom_point() + theme_civilytics()) |>
    civilytics_logo()

Updated docs, examples, and pipe test accordingly.

R/logo.R

@@ -205,18 +205,18 @@ make_logo_grob <- function(type = c("wordmark", "mark"),
 #' Add a Civilytics logo to a ggplot (pipe-friendly)
 #'
 #' A convenience wrapper that creates the logo grob and attaches it below the
-#' plot in one call. Designed for use with the base pipe `|>`:
+#' plot in one call. Designed for use with the base pipe `|>`.
+#'
+#' **Important:** R's `|>` has *higher* precedence than `+`, so you must
+#' wrap the ggplot chain in parentheses before piping:
 #'
 #' ```
-#' ggplot(mpg, aes(displ, hwy)) +
+#' (ggplot(mpg, aes(displ, hwy)) +
 #'   geom_point() +
-#'   theme_civilytics() |>
+#'   theme_civilytics()) |>
 #'   civilytics_logo()
 #' ```
 #'
-#' Since `|>` has lower precedence than `+`, the entire ggplot chain is piped
-#' as the first argument — no parentheses needed.
-#'
 #' @param plot A ggplot object.
 #' @param type Character. `"wordmark"` (default) or `"mark"`. Passed to
 #'   [make_logo_grob()].
@@ -233,17 +233,17 @@ make_logo_grob <- function(type = c("wordmark", "mark"),
 #' \dontrun{
 #' library(ggplot2); library(grid)
 #'
-#' # Pipe-friendly usage
-#' ggplot(mpg, aes(displ, hwy)) +
+#' # Pipe usage — parentheses required around the ggplot chain
+#' (ggplot(mpg, aes(displ, hwy)) +
 #'   geom_point() +
-#'   theme_civilytics() |>
+#'   theme_civilytics()) |>
 #'   civilytics_logo() |>
 #'   grid.draw()
 #'
 #' # Dark theme with mark
-#' ggplot(mpg, aes(displ, hwy)) +
+#' (ggplot(mpg, aes(displ, hwy)) +
 #'   geom_point() +
-#'   theme_civilytics_dark() |>
+#'   theme_civilytics_dark()) |>
 #'   civilytics_logo(variant = "dark", type = "mark") |>
 #'   grid.draw()
 #' }