The form:errors example may be incorrect

[mariordev]

I may be doing something wrong, but this is not working for me.

The example shown in content/collections/tags/form-errors.md states:

Note that since form:errors is a Tag rather than a variable, it should be wrapped with single braces when inside the conditional.

However, when I try exactly that, I get an error.

{{ form:set is="my_formset_handle" }}

    {{ if {form:errors} }}
        <p>There were some errors with your submission. Please fix them as indicated below and try submitting again.</p>
    {{ /if }}

    {{ form:create }}
        ...
    {{ /form:create }}

{{ /form:set }}

NOTE: the formset does exist.

When I remove the single brackets from {{ if {form:errors} }} then it works fine.

Using Statamic v2.11.15