Fix typos and documentation issues across multiple READMEs

[Zentex1337]

Summary

• Fixed various typos and documentation issues across multiple README files

Changes:

• README.md:

  • "Storing date in program derived addresses" -> "Storing data in program derived addresses"
  • "transferr tokens" -> "transfer tokens"
  • "designedated account" -> "designated account"
  • "Usng multiple token extensions" -> "Using multiple token extensions"

• basics/pda-rent-payer/README.md:

  • "This examples demonstrates" -> "This example demonstrates"

• compression/cnft-vault/anchor/README.md:

  • "one instructions that can withdraw" -> "one instruction that can withdraw"
  • "wheter a transfer" -> "whether a transfer"
  • "reference implemention" -> "reference implementation"
  • "publised on Solandy's" -> "published on Solandy's"

• compression/cutils/anchor/README.md:

  • "publised on Burger Bob's" -> "published on Burger Bob's"

• basics/favorites/anchor/README.md:

  • Fixed malformed markdown link (swapped text and URL)

• tokens/escrow/anchor/README.md:

  • "confuse with other times" -> "confuse with other items"

Test plan

• Documentation-only changes, no code affected