Update docs

druid/base/back_handler.lua

@@ -2,23 +2,24 @@ local event = require("event.event")
 local const = require("druid.const")
 local component = require("druid.component")
 
+---The component that handles the back handler action, like backspace or android back button
 ---@class druid.back_handler: druid.component
 ---@field on_back event Trigger on back handler action, fun(self, params)
 ---@field params any|nil Custom args to pass in the callback
 local M = component.create("back_handler")
 
 
----@param callback function|nil
----@param params any|nil
+---@param callback function|nil The callback to call when the back handler is triggered
+---@param params any? Custom args to pass in the callback
 function M:init(callback, params)
 	self.params = params
 	self.on_back = event.create(callback)
 end
 
 
----@param action_id hash
----@param action table
----@return boolean
+---@param action_id hash The action id
+---@param action table The action table
+---@return boolean is_consumed True if the input was consumed
 function M:on_input(action_id, action)
 	if action.released and (action_id == const.ACTION_BACK or action_id == const.ACTION_BACKSPACE) then
 		self.on_back:trigger(self:get_context(), self.params)