nft.storage update

Update outdated descriptions for NFT.Storage flagship product and classic.

Author: hsutaiyu

docs/tools/storage/filecoinhelpers.md

@@ -9,6 +9,8 @@ Filecoin is built on top of IPFS and supports storing data long-term via on-chai
 
 - [Lighthouse.storage](https://lighthouse.storage/): Permanent storage on IPFS and Filecoin that allows users to pay once and store forever. Lighthouse can also be used to store private data and build token gated applications on Filecoin.
 
-- [NFT.storage](https://nft.storage): NFT storage service that stores and retrieves data relating to NFTs on IPFS and Filecoin ([video](https://youtu.be/Ckb4RRJo-W0)).
-
 - [Web3.storage](https://web3.storage): Data storage service that stores and retrieves data on IPFS and Filecoin ([video](https://youtu.be/lPEqg6oL3Nk)).
+
+- [NFT.Storage Flagship Product](https://nft.storage/nft-storage-flagship-product): NFT storage service that stores and retrieves data relating to NFTs on IPFS and Filecoin for a one-time fee charged per GB of storage.
+
+- [NFT.Storage Classic](https://nft.storage/nft-storage-classic) *(uploads decommissioned)*: Used to offer free storage for NFT data. While you can't upload new data anymore, any files uploaded *before June 30, 2024* remain accessible.

docs/zkEVM/how-to/using-foundry.md

@@ -94,7 +94,7 @@ The stored data typically consists of the name of the token, brief description a
 
 - Choose an image and give it a name relatable to the token
 
-- Find some free of charge IPFS storage for the image, like [NFT.STORAGE](https://nft.storage)
+- Find an IPFS storage service for the image, for example [filebase](https://filebase.com) or [web3.storage](https://web3.storage) that provide free options, or [NFT.storage flagship product](https://nft.storage/nft-storage-flagship-product) that charge a one-time fee per GB of storage.
 
 - Upload the image to the storage using your GitHub account