update r_to_py.keras_layer_wrapper() method formals

per request via email from CRAN.

New R CMD check warning on R devel:
checking S3 generic/method consistency ... WARNING
r_to_py:
  function(x, convert)
r_to_py.keras_layer_wrapper:
  function(fn, convert)
See section ‘Generic functions and methods’ in the ‘Writing R
Extensions’ manual.

Author: t-kalinowski

NEWS.md

@@ -1,5 +1,7 @@
 # keras (development version)
 
+- Update S3 method formals per new CRAN requirement (`r_to_py.keras_layer_wrapper()`)
+
 # keras 2.11.0
 
 - Default TensorFlow version installed by `install_keras()` is now 2.11. 

R/layer-custom.R

@@ -244,8 +244,8 @@ create_layer_wrapper <- function(Layer, modifiers = NULL, convert = TRUE) {
 
 
 #' @export
-r_to_py.keras_layer_wrapper <- function(fn, convert = FALSE) {
-  layer <- attr(fn, "Layer", TRUE)
+r_to_py.keras_layer_wrapper <- function(x, convert = FALSE) {
+  layer <- attr(x, "Layer", TRUE)
   if (!inherits(layer, "python.builtin.type"))
     layer <- r_to_py(layer, convert)
   layer