Does not support `--platform common`

Hello. This client doesn't support `--platform common` / `-p common`, which is mentioned as a supported option [within the `tldr` page itself](https://github.com/tldr-pages/tldr/blob/30d1a8f0fc5df91f1bb8637e329a2fdd4611de4e/pages/common/tldr.md?plain=1#L21), as well as within a few of TLDR's pages:
![Image](https://github.com/user-attachments/assets/4ec96ae7-f003-48fb-88af-e794d9da70b6)
