[fr] French folder localization docs/concepts

[iguitton]

This issue is to track the pages to be localized in French under the folder docs/concepts and docs/getting-started

Below, you can check the list of the pages to create the translation.

• opentelemetry.io/content/en/docs/_index.md - Issue 5384: Created the home page for French localization #5386
• opentelemetry.io/content/en/docs/getting-started/_index.md
• opentelemetry.io/content/en/docs/getting-started/dev.md
• opentelemetry.io/content/en/docs/getting-started/ops.md
• opentelemetry.io/content/en/docs/concepts/_index.md
• opentelemetry.io/content/en/docs/concepts/components/
• opentelemetry.io/content/en/docs/concepts/context-propagation/ [fr] Create context-propagation.md #6003
• opentelemetry.io/content/en/docs/concepts/distributions.md
• opentelemetry.io/content/en/docs/concepts/glossary/
• opentelemetry.io/content/en/docs/concepts/observability-primer/ - [fr] Create observability-primer.md #5826
• opentelemetry.io/content/en/docs/concepts/semantic-conventions.md
• opentelemetry.io/content/en/docs/concepts/instrumentation/_index.md
• opentelemetry.io/content/en/docs/concepts/instrumentation/code-based.md
• opentelemetry.io/content/en/docs/concepts/instrumentation/libraries.md
• opentelemetry.io/content/en/docs/concepts/instrumentation/zero-code.md
• opentelemetry.io/content/en/docs/concepts/instrumentation-scope/index.md
• opentelemetry.io/content/en/docs/concepts/resources/index.md
• opentelemetry.io/content/en/docs/concepts/sampling/index.md
• opentelemetry.io/content/en/docs/concepts/signals/_index.md [fr] create opentelemetry.io/content/fr/docs/concepts/signals/_index.md #6031
• opentelemetry.io/content/en/docs/concepts/signals/baggage.md
• opentelemetry.io/content/en/docs/concepts/signals/logs.md
• opentelemetry.io/content/en/docs/concepts/signals/metrics.md
• opentelemetry.io/content/en/docs/concepts/signals/traces.md