[css-color-4] oops use us english

Author: svgeesus

css-color-4/Overview.bs

@@ -578,11 +578,11 @@ This section updates and replaces that part of CSS Object Model, section
 	</div>
 
 	The precision with which alpha values are retained,
-	and thus the number of decimal places in the serialised value,
+	and thus the number of decimal places in the serialized value,
 	is not defined in this specification,
 	but must at least be sufficient
 	to round-trip integer percentage values.
-	Thus, the serialised value must contain
+	Thus, the serialized value must contain
 	at least two decimal places
 	(unless trailing zeroes have been removed).
 	Values must be rounded, not truncated.
@@ -592,14 +592,14 @@ This section updates and replaces that part of CSS Object Model, section
 			may be serialized as the strings
 			"0.12" or "0.123" or "0.1234" or "0.12346"
 			(rounding up the value of 5 because the following digit is 6)
-			or any longer, rounded serialisation of the same form.
+			or any longer, rounded serialization of the same form.
 		</p>
 	</div>
 
 
-<h4 id="serialising-sRGB-values">Serialising sRGB values</h4>
+<h4 id="serializing-sRGB-values">serializing sRGB values</h4>
 
-	The serialised form of the following sRGB values:
+	The serialized form of the following sRGB values:
 
 	* [=hex colors=]
 	* ''rgb()'' and ''rgba()'' values
@@ -651,7 +651,7 @@ This section updates and replaces that part of CSS Object Model, section
 	will serialize with backwards-compatible integer values.
 
 	The precision with which sRGB component values are retained,
-	and thus the number of significant figures in the serialised value,
+	and thus the number of significant figures in the serialized value,
 	is not defined in this specification,
 	but must at least be sufficient
 	to round-trip eight bit values.