chore(docs): fix spelling issues

[duanwilliam]

Why

There are some spelling errors scattered throughout the beta docs.

What

This fixes some spelling errors in the beta docs.

Checklist

• Documentation updated
• Ready to be merged

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Name	Status	Preview	Updated
react-spring-io	❌ Failed (Inspect)		Sep 2, 2022 at 6:03AM (UTC)

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[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 6e0ba9c:

Sandbox	Source
spring-animating-auto	Configuration
spring-card	Configuration
spring-cards-stack	Configuration
spring-chain	Configuration
spring-css-keyframes	Configuration
spring-draggable-list	Configuration
spring-exit-before-enter	Configuration
spring-flip-card	Configuration
spring-goo-blobs	Configuration
spring-image-fade	Configuration
spring-list-reordering	Configuration
spring-masonry	Configuration
spring-multistage-transition	Configuration
spring-notification-hub	Configuration
spring-notification-hub	Configuration
spring-notification-hub	Configuration
initial-rocket	Configuration
spring-simple-transition	Configuration
spring-svg-filter	Configuration
spring-slide	Configuration
spring-tree	Configuration
spring-viewpager	Configuration

[joshuaellis]

Thanks for catching those!!