[exporter/datadogexporter] Add note about metrics stability (#3748)

* [exporter/datadogexporter] Add note about metrics stability * Apply suggestions from code review Co-authored-by: Kylian Serrania <kylian.serrania@datadoghq.com> Co-authored-by: Kylian Serrania <kylian.serrania@datadoghq.com>
open-telemetry · Jun 10, 2021 · 038be62 · 038be62
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diff --git a/exporter/datadogexporter/README.md b/exporter/datadogexporter/README.md
@@ -7,6 +7,8 @@ This exporter sends metric and trace data to [Datadog](https://datadoghq.com). F
 > which contains recommendations on securing sensitive information such as the
 > API key required by this exporter.
 
+> **Note**: The metrics exporter is not considered stable yet and may suffer breaking changes.
+
 ## Configuration
 
 The only required setting is a [Datadog API key](https://app.datadoghq.com/account/settings#api).