fix(modules): spip_bigup_unauth_rce minor fix

Author: dledda-r7

documentation/modules/exploit/multi/http/spip_bigup_unauth_rce.md

@@ -59,7 +59,8 @@ docker run --name casse-spip -p 8000:80 \
 
 ## Options
 
-- **FORM_PAGE**: This option allows you to specify a custom page on the target SPIP installation that contains a form.
+### FORM_PAGE
+This option allows you to specify a custom page on the target SPIP installation that contains a form.
 By default, the module will automatically check the `login`, `spip_pass`, and `contact` pages for forms,
 but if you know of another page that contains a form, you can specify it here.
 For example, if an article page contains a form, you can set this option like so:

modules/exploits/multi/http/spip_bigup_unauth_rce.rb

@@ -77,7 +77,7 @@ def initialize(info = {})
     )
     register_options(
       [
-        OptString.new('FORM_PAGE', ['false', 'A page with a form.', 'Auto'])
+        OptString.new('FORM_PAGE', [true, 'A page with a form.', 'Auto'])
       ]
     )
   end
@@ -132,7 +132,7 @@ def get_form_data
 
       next unless res&.code == 200
 
-      doc = Nokogiri::HTML(res.body)
+      doc = res.get_html_document
       action = doc.at_xpath("//input[@name='formulaire_action']/@value")&.text
       args = doc.at_xpath("//input[@name='formulaire_action_args']/@value")&.text