Add new comment to Mouse Wheel speds to control "Direct Access" in plugins

It works great! Thanks!!!

I've noticed that 10 is a more appropriate value for coarse integer adjustment. In fact, it's the increment value in the integer spinboxes when you press [CTRL] in the plugin properties window.

I'm not sure if it would be worthwhile to change in properties window to [SHIFT] instead of [CTRL] to maintain consistency with integer values in Direct Access.

However, for floating-point values, [CTRL] currently already works fine-tuning, just like in Direct Access.

				float fDelta = (pWheelEvent->angleDelta().y() < 0 ? -0.1f : +0.1f);
				if (pDirectAccessParam->isToggled())
					fDelta *= 10.0f;
				else
				if (pDirectAccessParam->isInteger()) {
					const float fNumSteps
						= pDirectAccessObserver->maxValue()
						- pDirectAccessObserver->minValue();
					fDelta *= (10.0f + fDelta) / fNumSteps;
					if ((fNumSteps > 10.0f) &&
						(pWheelEvent->modifiers() & Qt::ShiftModifier)) {

						fDelta *= 10.0f; // <<<<<<<<<<<<    Work better with 10

					}
				} else {
					fDelta *= 0.5f;
					if (pWheelEvent->modifiers() & Qt::ControlModifier)
						fDelta *= 0.5f;
				}
				fValue = pDirectAccessObserver->valueFromScale(
					fScale + fDelta, bLogarithmic);