[DOC] Add API Reference for distance profiles in Similarity Search module

[itsdivya1309]

Describe the feature or idea you want to propose

The distance profile functions implemented in aeon are:

1. euclidean_distance_profile
2. normalized_euclidean_distance_profile
3. naive_distance_pofile
4. normalized_naive_distance_profile
5. squared_distance_profile and
6. normalized_squared_distance_profile
   But they are not mentioned in the API references: https://www.aeon-toolkit.org/en/latest/api_reference/similarity_search.html

Describe your proposed solution

Add docstrings to the above functions.

Describe alternatives you've considered, if relevant

No response

Additional context

No response