Update CHANGELOG

Signed-off-by: owentou <owentou@tencent.com>
open-telemetry · Sep 20, 2021 · f73cc76 · f73cc76
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commit f73cc76
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -15,6 +15,8 @@ Increment the:
 
 ## [Unreleased]
 
+* Support environment variables for both `OtlpGrpcExporter` and `OtlpHttpExporter` ([#983](https://github.com/open-telemetry/opentelemetry-cpp/pull/983))
+
 ## [1.0.0] 2021-09-16
 
 ### API