simplify visjs demo intro

docs/examples/visjs/index.html

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     <h2 style="margin-bottom: 0.38em">Vis.js Integration – a <a style="color: dodgerblue" href="https://taataa.github.io/tapspace">Tapspace</a> example</h2>
-    <p>Here, we integrated a <a style="color: dodgerblue" href="https://visjs.github.io/vis-network/examples/">Vis.js network</a> with Tapspace to recursively <strong>open network nodes by clicking or tapping</strong>. Every time a node is opened, a new small <a href="https://visjs.github.io/vis-network/docs/network/">vis-network</a> is generated along with its canvas element as emphasized with the gray background. <strong>Scroll or pinch to zoom!</strong></p>
+    <p>Here, we set up a <a style="color: dodgerblue" href="https://visjs.github.io/vis-network/examples/">Vis.js network</a> with Tapspace to recursively <strong>open network nodes by clicking or tapping</strong>. Every time a node is opened, a new small <a href="https://visjs.github.io/vis-network/docs/network/">vis-network</a> is generated along with its canvas element as shown with the gray background. <strong>Scroll or pinch to zoom!</strong></p>
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