RFR: 8311098: Change comment in verificationType.hpp to refer to _sym

[Calvin Cheung]

On Wed, 17 Apr 2024 22:55:19 GMT, Ioi Lam <iklam at openjdk.org> wrote:

> Please review this trivial comment change.
> 
> The related code was changed during PermGen removal. Symbols used to be oops. Now they are metaspace objects.

Looks good and trivial.

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Marked as reviewed by ccheung (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/18830#pullrequestreview-2007589611