Review of beginners_guides section

[bdmoore1]

• Have you provided a meaningful PR description?
• Have you added a test, reproducer or referred to an issue with a reproducer?
• Have you tested your changes locally for CPU and GPU devices?
• Have you made sure that new changes do not introduce compiler warnings?
• Have you checked performance impact of proposed changes?
• If this PR is a work in progress, are you opening the PR as a draft?

Minor changes to fix grammar and clarity in the beginners guides section of the documentation.

[bdmoore1]

@ndgrigorian please add you and @xaleryb as reviewers.

[oleksandr-pavlyk]

Thanks for polishing the text @bdmoore1

I left a nit question, but the changes make the text read better

[coveralls]

coverage: 87.892%. remained the same
when pulling 454a089 on bdmoore1:bdmoore1-beginner-guides-review05032024
into 0df3bec on IntelPython:master.

[ndgrigorian]

This LGTM too!