Readme fixes

[shivamjjha]

Summary

README grammatical & 404 links' fixes

How did you test this change?

I guess not testing required here

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[sizebot]

Comparing: 13036bf...593f900

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name	+/-	Base	Current	+/- gzip	Base gzip	Current gzip
oss-stable/react-dom/cjs/react-dom.production.min.js	=	129.59 kB	129.59 kB	=	41.55 kB	41.55 kB
oss-experimental/react-dom/cjs/react-dom.production.min.js	=	134.77 kB	134.77 kB	=	43.10 kB	43.10 kB
facebook-www/ReactDOM-prod.classic.js	=	428.19 kB	428.19 kB	=	78.60 kB	78.60 kB
facebook-www/ReactDOM-prod.modern.js	=	418.18 kB	418.18 kB	=	77.17 kB	77.17 kB
facebook-www/ReactDOMForked-prod.classic.js	=	428.19 kB	428.19 kB	=	78.61 kB	78.61 kB

Significant size changes

Includes any change greater than 0.2%:

(No significant changes)

Generated by 🚫 dangerJS against 593f900

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Thank you for signing our Contributor License Agreement. We can now accept your code for this (and any) Meta Open Source project. Thanks!