docs: Make sure doc string list items appear as list items.

Author: kklein

dataframely/columns/float.py

@@ -60,15 +60,19 @@ def __init__(
             max_exclusive: Like `max` but exclusive. May not be specified if `max`
                 is specified and vice versa.
             check: A custom rule or multiple rules to run for this column. This can be:
+
                 - A single callable that returns a non-aggregated boolean expression.
                 The name of the rule is derived from the callable name, or defaults to
                 "check" for lambdas.
+
                 - A list of callables, where each callable returns a non-aggregated
                 boolean expression. The name of the rule is derived from the callable
                 name, or defaults to "check" for lambdas. Where multiple rules result
                 in the same name, the suffix __i is appended to the name.
+
                 - A dictionary mapping rule names to callables, where each callable
                 returns a non-aggregated boolean expression.
+
                 All rule names provided here are given the prefix `"check_"`.
             alias: An overwrite for this column's name which allows for using a column
                 name that is not a valid Python identifier. Especially note that setting