feat: make 1/2/3 steps more apparent

[janl]

• [ ] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [x] 👌 Enhancement (improving an existing functionality like performance)
• [ ] ✨ New feature (a non-breaking change that adds functionality)
• [ ] ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

I completely missed that there were multiple tabs in that snippet. Maybe numbering the titles helps the next person a little :)

📝 Checklist

• [x] I have updated the documentation accordingly.

[thetutlage]

We have this in many other docs, can you please update all for the sake of consistency?

[RomainLanz]

Small bump @janl 😄

[thetutlage]

This needs to be done for all the pages, if we choose to prefix the step number.