Fix docs build failure caused by unresolved MkDocs strict-mode links

[Copilot]

The build Actions job failed because mkdocs build --strict treated two links in docs/remote_job_monitoring.md as unresolved documentation targets. This PR updates those links so documentation builds no longer abort on warnings.

• Root cause

  • remote_job_monitoring.md linked to files under src/.../references via relative paths outside the MkDocs docs tree, which strict mode flags as missing doc targets.

• Change

  • Replaced the two broken relative links with canonical GitHub blob URLs pointing to the same reference documents.

• Updated section (example)

  - See the [Batch Job skill reference](../src/matcreator/skills/remote-job/references/bohr-batchjob-ref.md)
  - and [VASP Batch Job guide](../src/matcreator/skills/vasp-pymatgen/references/bohr-batchjob.md).
  
  + See the [Batch Job skill reference](https://github.com/AI4MS/MatCreator/blob/main/src/matcreator/skills/remote-job/references/bohr-batchjob-ref.md)
  + and [VASP Batch Job guide](https://github.com/AI4MS/MatCreator/blob/main/src/matcreator/skills/vasp-pymatgen/references/bohr-batchjob.md).