[Doc] Update doc about WLR usage for QL memory bank
@@ -177,6 +177,7 @@ The BL and WL protocols can be customized through the XML syntax ``bl`` and ``wl
- two outputs (one regular and another inverted)
- a Bit-Line input to load the data
- a Word-Line input to enable data write
+ - (optional) a Word-Line read input to enabe data readback
.. warning:: Please do NOT add inverted Bit-Line and Word-Line inputs. It is not supported yet!
