[css-images-4] Update changes

Author: svgeesus

css-images-4/Overview.bs

@@ -1794,7 +1794,7 @@ Coloring the Gradient Line</h4>
 		<img src="images/gradient-colors-transition-hint-comparison.png" alt="">
 
 		Top - Without transition hint (falling back to the default halfway transition hint):
-	
+
 		<pre class=lang-css>
 			background: linear-gradient(to right, red 0%, blue 100%);
 		</pre>
@@ -2361,7 +2361,9 @@ Changes {#changes}
 
 <h3 class="no-num" id="changes-20170413">Changes Since the <a href="https://www.w3.org/TR/2017/WD-css-images-4-20170413/">13 April 2017</a> Working Draft</h3>
 
-<!-- to 3 Nov 2021 -->
+<!-- to 18 Jan 2022 -->
+- Added an example of a color hint
+- Fixed typos in examples
 - Defined fetching of external images
 - Added &lt;color-interpolation-method> to all gradient functions
 - Added the -webkit-image-set() alias
@@ -2408,3 +2410,4 @@ Changes Since Level 3</h3>
 - Added the 'image-resolution' property (deferred from Level 3)
 - Added the ''element()'' notation (deferred from Level 3)
 - Added <a href="#conic-gradients">conic gradients</a>
+- Added &lt;color-interpolation-method> to all gradient functions