docs: update dia oracle page

[khawlahssn]

Fixes #issue_number

Description

Updates the DIA oracle integration guide and fixes broken links.

Test scenarios

No tests added. This is a documentation-only change updating existing oracle page.

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have cleaned up the code in the areas my change touches
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings
• I have removed any unnecessary console messages
• I have included all english text to the translation file and/or created a new issue with the required translations for the currently supported languages
• I have tested for mobile functionality and responsiveness
• I have added appropriate test coverage
• I have updated relevant documentation and/or opened a separate issue to cover the updates (Issue URL: )