fix: edit wikidata.py to make it work(especially for ./examples/01_prepare_data/wikidata_knowledge_graph.ipynb)

[LioneWang]

Description

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Checklist:

• I have followed the contribution guidelines and code style for this project.
• I have added tests covering my contributions.
• I have updated the documentation accordingly.
• I have signed the commits, e.g. git commit -s -m "your commit message".
• This PR is being made to staging branch AND NOT TO main branch.

[ds-wook]

Hi! Just a quick note — PRs shouldn’t be opened against the main branch. Could you please submit it to the staging branch instead?

For reference, please see the contributing guide:
https://github.com/recommenders-team/recommenders/blob/main/CONTRIBUTING.md

[miguelgfierro]

Suggested change

	WIKIDATA_API_URL = "https://www.wikidata.org/w/api.php"
	API_URL_WIKIPEDIA = "https://www.wikidata.org/w/api.php"
	API_URL_WIKIDATA = "https://query.wikidata.org/sparql"

better to keep the same name for consistency. And we can't erase the sparql endpoint, otherwise the rest of the tests will fail: python -m pytest tests/data_validation/recommenders/datasets/test_wikidata.py -v

[miguelgfierro]

Suggested change

	response = session.get(WIKIDATA_API_URL, params=params)
	response = session.get(API_URL_WIKIPEDIA, params=params)

As mentioned above, better to keep the name for consistency

[miguelgfierro]

there are some errors:

(596 durations < 0.005s hidden.  Use -vv to show these durations.)
=========================== short test summary info ============================
FAILED tests/data_validation/recommenders/datasets/test_wikidata.py::test_query_entity_links
FAILED tests/data_validation/recommenders/datasets/test_wikidata.py::test_read_linked_entities
FAILED tests/data_validation/recommenders/datasets/test_wikidata.py::test_query_entity_description

FYI @LioneWang