Add log section in the example configuration file

[kokliKo]

What does this PR do?

Adding the logs integration for Memcached

Motivation

Additional Notes

cc @NBParis

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• PR title must be written as a CHANGELOG entry (see why)
• Files changes must correspond to the primary purpose of the PR as described in the title (small unrelated changes should have their own PR)
• PR must have changelog/ and integration/ labels attached

[hithwen]

You've done something weird here, it shows red :S

[NBParis]

@hithwen fixed it, likely was a copy paste issue

[NBParis]

@hithwen @kokliKo Made a couple updates to match the expected read me format (similar to the other integration) and fix the copy paste issue on the tabs in the yaml format

[FlorianVeaux]

Approving and merging.
The name of the PR is used as is in the changelog for each integration, I changed it to something more changelog-like.

Thanks!