fs: Add kernel-doc comments to proc_create_net_data_write()

This commit adds kernel-doc style comments with complete parameter
descriptions for the function proc_create_net_data_write.
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/20240315073805.77463-1-yang.lee@linux.alibaba.comSigned-off-by: Christian Brauner <brauner@kernel.org>

fs/proc/proc_net.c

@@ -135,6 +135,7 @@ EXPORT_SYMBOL_GPL(proc_create_net_data);
  * @parent: The parent directory in which to create.
  * @ops: The seq_file ops with which to read the file.
  * @write: The write method with which to 'modify' the file.
+ * @state_size: The size of the per-file private state to allocate.
  * @data: Data for retrieval by pde_data().
  *
  * Create a network namespaced proc file in the @parent directory with the