RFR: 6607: Better descriptions for the code cache rule

[Marcus Hirt]

On Fri, 8 Nov 2024 06:44:43 GMT, Suchita Chaturvedi <schaturvedi at openjdk.org> wrote:

> This PR provides better description for code cache rule.
> 
> Before the change:
> ![image](https://github.com/user-attachments/assets/487bca61-ceee-4dda-bc70-9c99316d4ee7)
> 
> After the change:
> <img width="398" alt="image" src="https://github.com/user-attachments/assets/45d1b16d-47ea-4e78-add0-21d682e5ccbe">

Marked as reviewed by hirt (Lead).

Thanks @Suchitainf!

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PR Review: https://git.openjdk.org/jmc/pull/607#pullrequestreview-2423736523
PR Comment: https://git.openjdk.org/jmc/pull/607#issuecomment-2464693954