REST API Reference Ibexa logo links back to parent doc.

[adriendupuis]

Question	Answer
JIRA Ticket	N/A
Versions	4.x, 3.3
Edition	All

• Change Ibexa logo link behavior
  • Before: The Ibexa logo refresh the current page through a redirection via https://ezsystems.github.io/ezplatform-rest-reference
  • After: The Ibexa logo links to "REST API usage", the actual top sibling in the REST API folder
• Remove ez-raml version number (not displayed and not kept up-to-date, see RAML doc for an example of version usage not followed here)
• Update Ibexa logo <img> tag alt attribute.

Inspired by its PHP API Reference counter-part d9ef4ba

Checklist

• Text renders correctly
• Text has been checked with vale
• Description metadata is up to date
• Redirects cover removed/moved pages
• Code samples are working
• PHP code samples have been fixed with PHP CS fixer
• Added link to this PR in relevant JIRA ticket or code PR

[adriendupuis]

Note: Since #1871, with PHP 8.1+, the raml2html script output on terminal a Deprecated warning which I fix in raml-org/raml-php-parser#181. Despite this warning, outputted rest_api_reference.html is correct. It could be due to a misusage of baseUri as it seems dedicated to an online API. But, the warning occurs even when no baseUri is defined, so, no need to respect its usage.