[Content templates] update inconsistencies in contribution content templates :umbrella:

[laurenmrice]

Acceptance criteria

While the design team has been working on our issues of improving our website documentation, several of us have noticed some inconsistencies in the content templates we are referring to and we need to update the markdown templates for them on the website so they are accurate.

• Update inconsistencies in the content templates in the markdown examples on the website.
• This is a running list of some things we need to adjust in the templates, please add any other changes if there are any to these issues below.

### Tasks
- [ ] https://github.com/carbon-design-system/carbon-website/issues/3982
- [ ] https://github.com/carbon-design-system/carbon-website/issues/3983
- [ ] https://github.com/carbon-design-system/carbon-website/issues/3984
- [ ] [Content templates] AI section (maybe we don't need it based on the amount of components that use AI
- [ ] [Content templates] Style template updates
- [ ] Fluid inputs? Maybe extra stuff you add in. What's required and what's not required?

[sstrubberg]

This is even more important with having new team members getting used to how our documentation standards work. AND our contributors from product teams.