Pandas version checks

• I have checked that the issue still exists on the latest versions of the docs on main here

Location of the documentation

https://github.com/pandas-dev/pandas/blob/main/pandas/_libs/src/datetime/pd_datetime.c

Documentation problem

The file pd_datetime.c has missing documentation on line 195 for the function static int pandas_datetime_exec(PyObject *Py_UNUSED(module)). We need to add documentation for what the role of this function is.

Suggested fix for documentation

The suggested fix is to add documentation for the function that has been defined on line 195.

The function initializes and exposes a custom datetime C-API from the Pandas library by creating a PyCapsule that stores function pointers, which can be accessed later by other C code (or Cython code) that imports the capsule.