Update docs

docs/source/workflow_inputs.rst

@@ -1968,7 +1968,7 @@ If not entered, the simulation will not include mechanical ventilation.
   .. [#] FanType choices are "energy recovery ventilator", "heat recovery ventilator", "exhaust only", "supply only", "balanced", or "central fan integrated supply".
   .. [#] If flow rate not provided, defaults to the required mechanical ventilation rate per `ASHRAE 62.2-2019 <https://www.techstreet.com/ashrae/standards/ashrae-62-2-2019?product_id=2087691>`_, including adjustments for A) infiltration credit, B) balanced vs imbalanced systems, and C) adiabatic surfaces for SFA/MF buildings.
   .. [#] For a central fan integrated supply system, the flow rate should equal the amount of outdoor air provided to the distribution system.
-  .. [#] HoursInOperation is optional unless the VentilationFan refers to the supplemental fan of a CFIS system, in which case it is not used as an input.
+  .. [#] HoursInOperation is optional unless the VentilationFan refers to the supplemental fan of a CFIS system, in which case it is not allowed.
   .. [#] If HoursInOperation not provided, defaults to 24 (i.e., running continuously) for all system types other than central fan integrated supply (CFIS), and 8.0 (i.e., running intermittently) for CFIS systems.
          For a CFIS system, the HoursInOperation and the flow rate are combined to form the hourly target ventilation rate (e.g., inputs of 90 cfm and 8 hrs/day produce an hourly target ventilation rate of 30 cfm).
          For a CFIS system with a supplemental fan, the supplemental fan's runtime is automatically calculated for each hour (based on the air handler runtime) to maintain the hourly target ventilation rate.