Trying to add quotation markup

[ThomasLandauer]

Current approach (turning it into a blockquote by indenting it) doesn't work: https://symfony.com/doc/4.4/form/form_collections.html#allowing-new-tags-with-the-prototype

[javiereguiluz]

In RST the syntax for blockquote should be the original one ... the > ... syntax is for Markdown. In 3d1774a I've updated it to use code-block:: text, which is what we use in other similar cases in the docs. Thanks.