chore(predicate): fix typo in PreparePredicateStorageSlots comment

[yudrywet]

Why this should be merged

remove redundant word in comment

How this works

How this was tested

Need to be documented?

Need to update RELEASES.md?

[qdm12]

Hi @yudrywet can you please sign your commit?

You can usually do it with git commit -S --amend --no-edit && git push -f, provided your git has a signing setup, see https://docs.github.com/en/authentication/managing-commit-signature-verification/signing-commits

Thanks!