[docs-scanner] Remove time-relative language 'currently' from CLI OpenTelemetry docs

[docker-agent]

File: content/manuals/engine/cli/otel.md

Issue

The page uses time-relative language "currently" which is prohibited by STYLE.md because it goes stale silently:

Docker CLI currently exports a single metric, command.time, which measures
the execution duration of a command in milliseconds.

Suggested fix

Remove "currently" and state the fact directly:

"Docker CLI exports a single metric, command.time, which measures the execution duration of a command in milliseconds."

If more metrics are planned, add them when they're available rather than using time-relative language.

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Found by nightly documentation freshness scanner