Add a completion function.

[oree-xx]

Fixes

Description

I added a check_completion funtion for wikipedia_fetch.py and removed commented lines from github fetch.py

Checklist

• I have read and understood the Developer Certificate of Origin (DCO), below, which covers the contents of this pull request (PR).
• My pull request doesn't include code or content generated with AI.
• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the default branch of the repository (main or master).
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated unit tests and/or test scripts for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

Developer Certificate of Origin

For the purposes of this DCO, "license" is equivalent to "license or public domain dedication," and "open source license" is equivalent to "open content license or public domain dedication."

Developer Certificate of Origin

Developer Certificate of Origin
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Developer's Certificate of Origin 1.1

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(a) The contribution was created in whole or in part by me and I
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(b) The contribution is based upon previous work that, to the best
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    in the file; or

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[TimidRobot]

• My pull request targets the default branch of the repository (main or master).

Please check this. The target branch is creativecommons:main.

[TimidRobot]

• I tried running the project locally and verified that there are no visible errors.

Did you test your changes?

• If yes, please check this item
• If no, please do so, and check this once there are no visible errors

[TimidRobot]

To ensure this tests more than the header please increase the required lines (maybe to 300).

[TimidRobot]

Looking good, almost there