[css-color-hdr] Correct statement about Jzazbz using PQ, fix #10074

css-color-hdr/Overview.bs

@@ -629,7 +629,7 @@ Predefined color spaces for HDR: {#predefined-HDR}
 	and has been experimentally extended to L=400%.
 	In contrast, the J<sub>z</sub> axis in ''Jzazbz'',
 	which has a [0, 1.0] range,
-	uses Perceptual Quantizer encoding,
+	uses an encoding similar to Perceptual Quantizer,
 	and can represent a dynamic range of more than 13 stops.
 
 	It has the following characteristics: