[Docs] Fix on the documentation preview deploy CI

[pedrominatel]

Description of Change

This PR fix the requirements for the ESP-DOCS and the CI workflow for the preview deployment and documentation build.

Tests scenarios

N/A

Related links

#9094

[github-actions]

Warnings

⚠️

Some issues found for the commit messages in this PR: the commit message "Fix on the Docs deploy CI": summary looks empty type/action looks empty the commit message "Removed the docs build badge (RTD)": summary looks empty type/action looks empty the commit message "Update .github/workflows/docs_build.yml": summary looks empty type/action looks empty Please fix these commit messages - here are some basic tips: follow Conventional Commits style correct format of commit message should be: <type/action>(<scope/component>): <summary>, for example fix(esp32): Fixed startup timeout issue allowed types are: change,ci,docs,feat,fix,refactor,remove,revert,test sufficiently descriptive message summary should be between 20 to 72 characters and start with upper case letter avoid Jira references in commit messages (unavailable/irrelevant for our customers) TIP: Install pre-commit hooks and run this check when committing (uses the Conventional Precommit Linter).

	Messages
📖	You might consider squashing your 3 commits (simplifying branch history).

👋 Hello pedrominatel, we appreciate your contribution to this project!

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