[DOC]: Thrust - Make vectorized binary searches discoverable

### Is this a duplicate?

- [X] I confirmed there appear to be no [duplicate issues](https://github.com/NVIDIA/cccl/issues) for this bug and that I agree to the [Code of Conduct](CODE_OF_CONDUCT.md)

### Is this for new documentation, or an update to existing docs?

Update

### Describe the incorrect/future/missing documentation

The documentation for vectorized binary searches, such as [lower bound](https://nvidia.github.io/cccl/thrust/api/function_group__vectorized__binary__search_1ga30acecaad39c7d9f299f0cc515b762ce.html#group__vectorized__binary__search_1ga30acecaad39c7d9f299f0cc515b762ce), are not available through the [binary search](https://nvidia.github.io/cccl/thrust/api_docs/algorithms/searching/binary_search.html) subsection of 'Thrust API Documentation' > algorithms > searching.
They can only be found by going through the ['Thrust: The C++ Parallel Algorithms Library API'](https://nvidia.github.io/cccl/thrust/api/thrust_api.html#thrust-the-c-parallel-algorithms-library-api), which doesn't seem to be the preferred documentation for users. (There is also the added difficulty from being thrown out of the 'Thrust: The C++ Parallel Algorithms Library API' if a link redirects to the 'Thrust API Documentation')

### If this is a correction, please provide a link to the incorrect documentation. If this is a new documentation request, please link to where you have looked.

https://nvidia.github.io/cccl/thrust/api_docs/algorithms/searching/binary_search.html
https://nvidia.github.io/cccl/thrust/api/namespace_thrust.html#functions