Add definition for term Vue

[samwambam]

What I did...

• added definition for Vue
• added a source of the definition
• removed the single quotes on line 3

How to test...

On this PR

• On netlify's table, click on the link to the right of the "netlify/cherryontech/deploy-preview — Deploy Preview ready!"
• Navigate to the dictionary page

[netlify[bot]]

✅ Deploy Preview for cherryontech ready!

Name	Link
🔨 Latest commit	bf6ae257ad6d7a8892d232de9ee59f31ce001a8e
🔍 Latest deploy log	https://app.netlify.com/sites/cherryontech/deploys/6600a4e549dc880008e44163
😎 Deploy Preview	https://deploy-preview-231--cherryontech.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

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