doc: default port 5001

[pratapvardhan]

---

name: Pull Request
about: since port will default to 5001 or the PORT environment variable. This PR makes the doc change to 5001 from 8000.
title: '[PR] doc: default port 5001'
labels: 'documentation'
assignees: 'jph00'

---

Proposed Changes
Since port will default to 5001 or the PORT environment variable. I think, it's helpful for to use 5001, instead of 8000. (which may cause some confusion with new adopters)
https://docs.fastht.ml/tutorials/by_example.html

Types of changes
What types of changes does your code introduce? Put an x in all the boxes that apply:

• Bug fix (non-breaking change which fixes an issue)

Checklist
Go over all the following points, and put an x in all the boxes that apply:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• All new and existing tests passed.
• I am aware that this is an nbdev project, and I have edited, cleaned, and synced the source notebooks instead of editing .py or .md files directly.

[gitnotebooks]

Found 1 changed notebook. Review the changes at https://app.gitnotebooks.com/AnswerDotAI/fasthtml/pull/630

[jph00]

Thanks :)