Correct description of parameters

Part of #2411

Author: veod32

doc/reference/reference_lua/datetime/interval_new.rst

@@ -11,7 +11,7 @@ datetime.interval.new()
     See :ref:`description of units <interval-new-args>` and :ref:`examples <interval-new-example>` below.
 
     :param table time_units: Table of :ref:`time units <interval-new-args>`. For all possible time units, the values are not restricted.
-                                If an empty table or no arguments are passed, the ``interval`` object with the default value ``0 second`` is created.
+                                If an empty table or no arguments are passed, the ``interval`` object with the default value ``0 seconds`` is created.
 
     :return: :doc: interval object
     :rtype: cdata

doc/reference/reference_lua/datetime/new.rst

@@ -9,16 +9,16 @@ datetime.new()
 
     Create an object of the :ref:`datetime type <index-box_datetime>` from a table of time units.
     See :ref:`description of units <datetime-new-args>` and :ref:`examples <datetime-new-example>` below.
-    If an empty table or no arguments are passed, create the ``datetime`` object with the default values corresponding to Unix Epoch: ``1970-01-01T00:00:00Z``.
 
-    :param table time_units: Table of time units. [TDB]
+    :param table time_units: Table of :ref:`time units <datetime-new-args>`.
+                                If an empty table or no arguments are passed, the ``datetime`` object with the default values corresponding to Unix Epoch is created: ``1970-01-01T00:00:00Z``.
 
     :return: :doc:`datetime object <./datetime/datetime_object>`
     :rtype: cdata
 
     ..  _datetime-new-args:
 
-    **Possible time units for ``datetime.new()** [TBD]
+    **Possible input time units for ``datetime.new()**
 
     ..  container:: table