Docs fixes

[bkrmadtya]

Why

• Example code was not functioning as it was supposed to
• The instruction did not state clearly when the animation will be in effect which could be confusing for beginners (which was my case)

What

Updated the documentation:

• Fixed the unused useSpring styles object that was not passed as style to the animated.div
• Clearly stated when the animation is shown

Checklist

• Documentation updated
• Demo added
• Ready to be merged

This was my first time trying react-spring and I tried the example in CodeSandBox but it was not working. Found why it was not working and updated the documentation so, it will be easier for anyone who is trying this library for the first time.

NB: This is my first time contributing to any open source project.

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pmndrs/react-spring	Configuration

[joshuaellis]

Great catch! That's an issue with the docs package at the moment, so I need to take a look at that before I can merge this.

[joshuaellis]

Thanks for the contribution! ⭐