ruby: fix crash with Ruby 2.0: use one array for the last 6 arguments of function config_new_option (bug #31050)

doc/it/weechat_plugin_api.it.txt

@@ -4354,6 +4354,12 @@ option5 = weechat.config_new_option(config_file, section, "option5", "color",
     "", "")
 ----------------------------------------
 
+// TRANSLATION MISSING
+[NOTE]
+In Ruby, the 3 callbacks + data (6 strings) must be given in an array of 6
+strings (due to a Ruby limitation of 15 arguments by function), see the
+'WeeChat Scripting Guide' for more info (_fixed in version 0.4.1_).
+
 weechat_config_search_option
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 

doc/it/weechat_scripting.it.txt

@@ -57,6 +57,16 @@ Ruby
 
 * E necessario definire 'weechat_init' e chiamare 'register' all'interno
 * Le funzioni sono chiamate con `Weechat.xxx(arg1, arg2, ...)`
+// TRANSLATION MISSING
+* Due to a limitation of Ruby (15 arguments max by function), the function
+  `Weechat.config_new_option` receives the callbacks in an array of 6 strings
+  (3 callbacks + 3 data strings), so a call to this function looks like:
+
+[source,ruby]
+----------------------------------------
+Weechat.config_new_option(config, section, "name", "string", "description of option", "", 0, 0,
+                          "value", "value", 0, ["check_cb", "", "change_cb", "", "delete_cb", ""])
+----------------------------------------
 
 Lua
 ^^^