Some time we need to change default header then we can easily change default header via following typoscript.
content.defaultHeaderType = 3
We have set defaultHeaderType is 3. its mean whenever we used default from header then it will render as h3 tag.
if we want to set default header as H2 tag then we can use simply 2 in defaultHeaderType
content.defaultHeaderType = 2
I hope it will work for you 🙂
If you have any queries, please do not hesitate to contact me at Jainish Senjaliya