chore: fix comment for crates/allocator/src/bump.rs

[asttool]

Summary

Closes #_

• y/n | Does it introduce breaking changes?
• y/n | Is it dependent on a specific version of cargo-contract or pallet-revive?

Description

fix comment for crates/allocator/src/bump.rs

Checklist before requesting a review

• I have added an entry to CHANGELOG.md
• I have commented on my code, particularly in hard-to-understand areas
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules

[cmichi]

I don't think this is correct, can you elaborate on your reasoning?

[cmichi]

Closing as my question above was not addressed in two weeks, feel free to reopen!