Propose to use the hyphenated nbdev commands throughout CONTRIBUTING.md

[tolgacangoz]

---

name: Pull Request
about: Propose to use the hyphenated nbdev commands throughout CONTRIBUTING.md
title: '[PR] '
labels: ''
assignees: ''

---

Related Issue
Propose to fix #931.

Proposed Changes
Update the usages of nbdev==3. Also fix 'you notebooks' -> 'your notebooks'.

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)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

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.
• I have added tests to cover my changes.
• 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.

[jph00]

Thanks! :)

[tolgacangoz]

Thanks for merging! I am continuing with other pages/files.