IBX-9030: Add content name pattern examples

[adriendupuis]

Question	Answer
JIRA Ticket	IBX-9030
Versions	master, 4.6 (3.3?)
Edition	All

Add several content name pattern examples, from simple to advanced, an a notice about special characters (encountered in IBX-8897)

Preview: https://ez-systems-developer-documentation--2513.com.readthedocs.build/en/2513/administration/content_organization/content_types/#content-type-metadata

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

[Sztig]

After a small discussion with @alongosz it looks like the () should not be parsed outside angle brackets <> and it might be a regression, I will check on 3.3 where it was reported to work as intended and if the bug not happens there then I will proceed with it as a new bug. Maybe we should wait with pushing the documentation till it is resolved.

[mnocon]

Status: waiting for https://github.com/ibexa/core/pull/449