calculate_post_points() - Documentation Error

[ansonphong]

Hi Haidy, I made the mistake when documenting the points functions of writing basically the same thing for both calculate_post_points() and cache_post_points()

Essentially, calculate_post_points() should just calculate and return the points, and cache_post_points() can use calculate_post_points() and additionally update the values in the database.

I have updated the docs to this specification, and the change can be made. Thanks

[hmikhail]

Done in commits : 602d0ee8fdedfa3ebcf00a7d964a9099b3ba1d07 and 7dc25fe2558a095e3c7b75f17242b78148a6c067