remove unwanted foo/ from wikiconfig.py examples; fixes #1649

[RogerHaase]

No description provided.

[ThomasWaldmann]

The idea behind that was that pages starting with foo/ (== subpages of foo) are stored in that namespace.

If you remove the slash, page foobar and fool will also be stored into that namespace.

Except if there was a code change that auto-appends a slash. Is that the case?

[RogerHaase]

The trailing / was from /storage/__init__.py create_simple_mapping #563 when wikiconfig.py used create_simple_mapping. The trailing / is no longer in the docs https://moin-20.readthedocs.io/en/latest/admin/configure.html#create-simple-mapping but lived on in code comments.

wikiconfig.py now uses create_mapping per #1237 which allows admins to create custom namespaces.

namespaces = {
    # maps namespace name -> backend name
    # first, configure the required, standard namespaces:
    NAMESPACE_DEFAULT: 'default',
    - snip -
    # some additional custom namespaces stored in default backend:
    'foo': 'default',
    'bar': 'default',
    # custom namespace with a backend
    'baz': 'baz',
}

There were 2 code changes, trailing / was removed from create_simple_mapping, and wikiconfig.py changed to use create_mapping.