minor symfony#10713 Fixed the TOC of the main Forms article (javiereguiluz)

This PR was squashed before being merged into the 3.4 branch (closes symfony#10713).

Discussion
----------

Fixed the TOC of the main Forms article

Commits
-------

4e3c329 Fixed the TOC of the main Forms article

Author: javiereguiluz

forms.rst

@@ -695,11 +695,10 @@ Learn more
     :maxdepth: 1
     :glob:
 
-    form/*
-
-* :doc:`/controller/upload_file`
-* :doc:`/reference/forms/types`
-* :doc:`/http_cache/form_csrf_caching`
+    /form/*
+    /controller/upload_file
+    /reference/forms/types
+    /http_cache/form_csrf_caching
 
 .. _`Symfony Form component`: https://github.com/symfony/form
 .. _`DateTime`: https://php.net/manual/en/class.datetime.php