Math function description issue

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/9.5/static/functions-math.html
Description:

https://www.postgresql.org/docs/9.5/static/functions-math.html

Same issue for other versions.
Please, check ceil, ceiling and floor functions. Example is correct, but
description is wrong.

For ceil in docs
Description: smallest integer not less than argument.
Example: ceil(-42.8) = -42

But -42.8 < -42
So, description should be "Biggest integer".

Vice versa for floor.