Added test files for BBC News Module

[Santhosh-Siddhardha]

Description

This pull request adds comprehensive unit tests for all methods within the bbc module and includes a dedicated test file (bbc_test.py) located in the src/test directory. The tests are implemented using Python's unittest framework to ensure robust validation of the module's functionality.

And aslo updated small mistake in BBC News in dev-documentation.md.

Resolves: #855

Checklist

Before submitting this pull request, kindly verify that the ensuing checkpoints have been reached.

• [x] Have you adhered to the repository's defined coding convention rules?
• [ ] Have you updated the 'documentation.md' file with the method/function documentation?
• [x] Have you sent a message along with the result or response?
• [x] Have you used the try-catch technique?
• [x] Has the method/class been added to the documentation (md file)?

Screenshots

Change in dev-documentation.md

• Before Change

• After Change

Additional Notes/Comments

None

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I certify that I have carried out the relevant checks and provided the requisite screenshot for validation by submitting this pull request. I appreciate your contribution.