Add missing memory metrics explanation to documentation page

[nunodio]

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Yes

Is your feature request related to a problem? Please describe.
Yes. The current documentation lacks definitions for several key memory metrics reported by the INFO command, making troubleshooting memory usage difficult for users.

Describe the solution you'd like
Update the info command documentation page to include detailed explanations and definitions for all metrics present in the # Memory section (ex: object_used_memory, type_used_memory_string, table_used_memory, etc.)

Describe alternatives you've considered
N/A

Additional context
N/A

[romange]

Hello @nunodio ,

Thanks for the suggestion! We recently made a change concentrating all the memory related metrics under the same variable under /metrics endpoint. Having said that, you are correct that "info memory" is less clear. This project is community based and you are more than welcome to send a PR improving the documentation at https://github.com/dragonflydb/documentation . I am transferring the issue there.