Update vlm.qmd

[Mjrovai]

Correcting a few typos.

Before submitting your Pull Request, please review and complete the items on this checklist.

• [x ] The text has been proofread for grammar and spelling errors.
• [x ] All images, figures, and tables render properly without any glitches.
• [x ] All images have a source or they are properly linked to external sites.
• [ x] The chapter's formatting is consistent with the rest of the book.
• [x ] The chapter has been locally built and tested using Quarto.

[profvjreddi]

Thanks @Mjrovai