Fix undefined names in docs/source/_ext/entities.py

[cclauss]

An undefined name is likely to raise NameError at runtime.

% ruff check --output-format=concise --select=F821 docs/source/_ext/entities.py

docs/source/_ext/entities.py:87:70: F821 Undefined name `name_node`
docs/source/_ext/entities.py:160:39: F821 Undefined name `NoUri`
docs/source/_ext/entities.py:164:28: F821 Undefined name `NoUri`

NoUri: https://www.sphinx-doc.org/en/master/_modules/sphinx/errors.html

% ruff rule F821

undefined-name (F821)

Derived from the Pyflakes linter.

What it does

Checks for uses of undefined names.

Why is this bad?

An undefined name is likely to raise NameError at runtime.

Example

def double():
    return n * 2  # raises `NameError` if `n` is undefined when `double` is called

Use instead:

def double(n):
    return n * 2

Options

• [target-version]: Can be used to configure which symbols Ruff will understand
  as being available in the builtins namespace.

References

• Python documentation: Naming and binding

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.