[css-color-4] typos

Author: svgeesus

css-color-4/Overview.bs

@@ -2983,7 +2983,7 @@ Converting CMYK colors to Lab
 </h3>
 
 	Conversion from a calibrated CMYK colorspace to Lab
-	is typically dones by looking up the Lab values in an ICC profile.
+	is typically done by looking up the Lab values in an ICC profile.
 
 <h3 id="lab-to-cmyk">
 	Converting Lab colors to CMYK
@@ -2993,7 +2993,7 @@ Converting CMYK colors to Lab
 	Lab colors will need to be converted
 	to the colorspace of the display.
 
-	This is typically dones by looking up the CMYK values in an ICC profile.
+	This is typically done by looking up the CMYK values in an ICC profile.
 
 <h3 id='lab-to-lch'>
 Converting Lab colors to LCH colors</h3>