docs: convert shinyjs doc links to plain text, remove from Suggests

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

DESCRIPTION

@@ -116,7 +116,6 @@ Suggests:
     reactlog (>= 1.0.0),
     rmarkdown,
     sass,
-    shinyjs,
     showtext,
     testthat (>= 3.2.1),
     watcher,

R/bootstrap.R

@@ -1245,7 +1245,7 @@ uiOutput <- htmlOutput
 #'   - `FALSE`: the button starts disabled and Shiny will **never**
 #'     automatically enable it, even after the `downloadHandler` is ready.
 #'     You are responsible for managing the enabled/disabled state yourself
-#'     (e.g., with [shinyjs::enable()] and [shinyjs::disable()]).
+#'     (e.g., with `shinyjs::enable()` and `shinyjs::disable()`).
 #' @param ... Other arguments to pass to the container tag function.
 #'
 #' @examples

man/downloadButton.Rd

@@ -42,6 +42,7 @@ enabled once the server has initialized the \code{downloadHandler}.
 automatically enable it, even after the \code{downloadHandler} is ready.
 You are responsible for managing the enabled/disabled state yourself
 (e.g., with \code{\link[shinyjs:enable]{shinyjs::enable()}} and \code{\link[shinyjs:disable]{shinyjs::disable()}}).
+(e.g., with \code{shinyjs::enable()} and \code{shinyjs::disable()}).
 }}
 
 \item{icon}{An \code{\link[=icon]{icon()}} to appear on the button. Default is \code{icon("download")}.}