chore(applyPatch): correct comment

[code-forger]

Sorry for the super tiny PR.

However in this comment, its noted that passing down the input param mutateDocument is unnecessary.

This is because in the case mutateDocument was **true** passing down true is effectively a no-op.

and in the case mutateDocument was **false** a deep clone has already taken place, so further deep clones are redundant and affect performance.

The comment had the above switched.