Expand on NFT standards and replace SubQuery -> SubSquid

[yangwao]

          https://deploy-preview-94--developers-kodadot.netlify.app/core-concepts/kodadot-stack/

Replace to SubSquid and link to https://docs.subsquid.io/

In the upcoming section

• https://deploy-preview-94--developers-kodadot.netlify.app/other/kodadot-upcoming.html
  

I would link those NFT standards.

Expand on more NFT standards

Currently, we are starting to have section of NFT standards on our hello

I would like to see dynamic NFTs which are pop.
On-chain NFTs are not sure if they have ERC already, which are mostly SVG stuff
ERC-998
Tezos has a single Non-Fungible Token standard called FA2.
https://nftnow.com/features/new-token-standards-you-need-to-know/
ERC-721C
BRC-721E

Follow-up actions

• hint NFT standards we should have there cc @vikiival
• Recycle maybe something from https://www.nftstandards.wtf/ and give attribution

Originally posted by @yangwao in #94 (comment)

[yangwao]

cc @poppyseedDev