docs: fix dead links (#345)

Author: zyyv

docs/index.html

@@ -535,7 +535,7 @@ <h3 id="chroma-brewer">chroma.brewer</h3>
 </code></pre>
 <h3 id="chroma-bezier">chroma.bezier</h3>
 <h4 id="-colors-">(colors)</h4>
-<p><code>chroma.bezier</code> returns a function that <a href="https://www.vis4.net/blog/posts/mastering-multi-hued-color-scales/">bezier-interpolates between colors</a> in <code>Lab</code> space. The input range of the function is <code>[0..1]</code>.</p>
+<p><code>chroma.bezier</code> returns a function that <a href="https://www.vis4.net/blog/mastering-multi-hued-color-scales/">bezier-interpolates between colors</a> in <code>Lab</code> space. The input range of the function is <code>[0..1]</code>.</p>
 <pre><code class="lang-js">// linear interpolation
 chroma.scale([&#39;yellow&#39;, &#39;red&#39;, &#39;black&#39;]);
 // bezier interpolation

docs/src/index.md

@@ -876,7 +876,7 @@ chroma.brewer.OrRd
 ### chroma.bezier
 #### (colors)
 
-`chroma.bezier` returns a function that [bezier-interpolates between colors](https://www.vis4.net/blog/posts/mastering-multi-hued-color-scales/) in `Lab` space. The input range of the function is `[0..1]`.
+`chroma.bezier` returns a function that [bezier-interpolates between colors](https://www.vis4.net/blog/mastering-multi-hued-color-scales/) in `Lab` space. The input range of the function is `[0..1]`.
 
 ```js
 // linear interpolation