[REGRESSION] Multimedia content e2e test suit doesn't work

[VadimKovalenkoSNF]

In the main branch, run: npm run test:pattern 'test/e2e/multimediaContent.test.ts'

Got error:

[ERROR] Invalid internal links found:
      The following links:
    - ../../I/Kiwix_Hackathon_2017_Florence_WikiFundi.webm.120p.vp9.webm
    - ../../I/Kiwix_Hackathon_2017_Florence_WikiFundi.webm.120p.vp9.webm
    (I/Kiwix_Hackathon_2017_Florence_WikiFundi.webm.120p.vp9.webm) were not found in article A/User:Kelson/MWoffliner_CI_reference
    [INFO] Overall Test Status: Fail
    [INFO] Total time taken by zimcheck: <3 seconds.]

[kelson42]

Basically a duplicate of #890