Fix the title of "Type Objects" page

Documentation

Type Objects and Type Objects have the same page title even though their contents are different. For consistency with other pages, the title of the former page might be something like "Type Object Structures".

Linked PRs

• gh-130814: Enhance documentation for Python C API type objects #130817
• [3.12] gh-130814: Enhance documentation for Python C API type objects (GH-130817) #131224
• [3.13] gh-130814: Enhance documentation for Python C API type objects (GH-130817) #131225

[sharktide]

I'll make a pr fix

[picnixz]

Thank you for the report and the fix.