doc(website): fix the technical_fork.md codepen display (X-lab2017#1194)

* add docs for technical fork

* Update technical_fork.md

* docs:fix the codepen display

docs/metrics/technical_fork.md

@@ -24,7 +24,7 @@ To get the data for a certain repository, replace {owner} and {repo} with the ac
 
 ## CodePen Demo
 
-<iframe height="600" style="width: 100%;" scrolling="no" title="OpenDigger - [X-lab] Attention/Stars/Technical Fork/Bus Factor" src="https://codepen.io/frank-zsy/pen/MWBdpNg?type=technical_fork&default-tab=js%2Cresult&editable=true" frameborder="no" loading="lazy" allowtransparency="true" allowfullscreen="true">
+<iframe height="600" style="width: 100%;" scrolling="no" title="OpenDigger - [X-lab] Attention/Stars/Technical Fork/Bus Factor" src="https://codepen.io/frank-zsy/embed/MWBdpNg?type=technical_fork&default-tab=js%2Cresult&editable=true" frameborder="no" loading="lazy" allowtransparency="true" allowfullscreen="true">
   See the Pen <a href="https://codepen.io/frank-zsy/pen/MWBdpNg?type=technical_fork">
   OpenDigger - [X-lab] Attention/Stars/Technical Fork/Bus Factor</a> by Frank Zhao (<a href="https://codepen.io/frank-zsy">@frank-zsy</a>)
   on <a href="https://codepen.io">CodePen</a>.