use more succint #huggingFaceLoadModelContainer macro in example codes

[KyawTheMonkey]

Proposed changes

Remove the default #hubDownloader and #huggingFaceTokenizerLoader macros, replacing them with the more succinct #huggingFaceLoadModelContainer macro where relevant.

Checklist

Put an x in the boxes that apply.

• I have read the CONTRIBUTING document
• I have run pre-commit run --all-files to format my code / installed pre-commit prior to committing changes
• I have added tests that prove my fix is effective or that my feature works
• I have updated the necessary documentation (if needed)

[davidkoski]

Looks good, thank you!