fix flaws in Web/API/EffectTiming/easing

files/en-us/web/api/effecttiming/easing/index.html

@@ -60,7 +60,7 @@ <h3 id="Value">Value</h3>
     <code>cubic-bezier(&lt;number&gt;, &lt;number&gt;, &lt;number&gt;, &lt;number&gt;)</code>
   </dt>
   <dd><img alt="A diagram showing the points of a cubic bezier timing function."
-      src="https://www.w3.org/TR/css-timing-1/cubic-bezier-timing-curve.svg"><br>
+      src="cubic-bezier-timing-curve.svg"><br>
     Specifies <a
       href="https://w3c.github.io/web-animations/#cubic-bzier-timing-function">a cubic
       Bézier timing function</a>. The four numbers specify points P1 and P2 of the curve
@@ -90,7 +90,7 @@ <h3 id="Value">Value</h3>
     <code>frames()</code>.</dd>
   <dt><code>steps(&lt;integer&gt;[, [ start | end ] ]?)</code></dt>
   <dd><img alt="A diagram of the various steps timing functions."
-      src="https://www.w3.org/TR/css-timing-1/step-timing-func-examples.svg"><br>
+      src="step-timing-func-examples.svg"><br>
     Specifies <a href="https://w3c.github.io/web-animations/#step-timing-function">a step
       timing function</a>, which breaks the animation down into a number of equal time
     intervals. The browser flips to a different static frame when each interval is