[Docs] Inconsistent content width across multiple documentation pages

### Current State
The main content container appears much narrower on several documentation pages, leaving a large amount of empty space on both the left and right sides compared to other pages.
This results in an inconsistent reading experience across the documentation.

The issue can be observed on the following pages:

- https://docs.layer5.io/cloud/concepts/identity-and-security/users/default-permissions/
- https://docs.layer5.io/cloud/concepts/identity-and-security/roles/organization-roles/
- https://docs.layer5.io/cloud/concepts/identity-and-security/roles/workspace-roles/
- https://docs.layer5.io/cloud/concepts/identity-and-security/roles/team-roles/
- https://docs.layer5.io/cloud/concepts/identity-and-security/roles/user-role/
- https://docs.layer5.io/cloud/concepts/spaces/
- https://docs.layer5.io/cloud/guides/workspaces/
- https://docs.layer5.io/cloud/guides/integrations/
- https://docs.layer5.io/cloud/guides/tutorials/
- https://docs.layer5.io/cloud/guides/self-hosted/
- https://docs.layer5.io/cloud/guides/self-hosted/deployment/helm-chart-values/
- https://docs.layer5.io/cloud/academy/
- https://docs.layer5.io/cloud/reference/releases/
- https://docs.layer5.io/kanvas/designer/export-designs/
- https://docs.layer5.io/kanvas/tasks/
- https://docs.layer5.io/kanvas/tasks/designs/
- https://docs.layer5.io/kanvas/tasks/designs/undeploying-designs/
- https://docs.layer5.io/kanvas/tasks/designs/cloning-a-design/
- https://docs.layer5.io/kanvas/tutorials/artifacthub/
- https://docs.layer5.io/kanvas/tutorials/azure/
- https://docs.layer5.io/kanvas/tutorials/wordpress/
- https://docs.layer5.io/kanvas/reference/

### Desired State

Use the same content width on all documentation pages to keep the layout consistent.

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#### Contributor Guide and Resources
- 📚 [Instructions for contributing to documentation](https://github.com/layer5io/docs/blob/master/CONTRIBUTING.md)
- Layer5 documentation [site](https://docs.layer5.io) and [source](https://github.com/layer5io/docs/)
- 🎨 Wireframes and [designs for Layer5 site](https://www.figma.com/file/5ZwEkSJwUPitURD59YHMEN/Layer5-Designs) in Figma [(open invite)](https://www.figma.com/team_invite/redeem/GvB8SudhEOoq3JOvoLaoMs)
- 🙋🏾🙋🏼 Questions: [Layer5 Discussion Forum](https://discuss.layer5.io) and [Layer5 Community Slack](http://slack.layer5.io)