Update upload_file.rst | tiny grammar typos

[Parapheen]

Description

Tiny grammar typos for upload file doc.

Fixes # (issue)

Type of change

• Documentation (typos, code examples or any documentation update)
• This change requires a documentation update

How Has This Been Tested?

Automatically initiated from docs page.

Checklist:

N/A

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[github-actions]

✔️ Changelog found.

Thank you for adding a description of the changes

[Parapheen]

Alright, I didn't anticipate changelog to be required updating. It's my first time contributing at all. So sorry for silly questions but do I need to change the base branch or do I really need to update the changelog?

If there is a doc, please point me at it to read 🥲

[JrooTJunior]

Small documentation changes can be applied without changelog (Maintainers can skip news for PR's)