CHANGELOG: remove spurious backtick (#2628)

Co-authored-by: Shalev Roda <[email protected]>

Author: xrmx

CHANGELOG.md

@@ -44,7 +44,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#2300](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2300))
 - Rename AwsLambdaInstrumentor span attributes `faas.id` to `cloud.resource_id`, `faas.execution` to `faas.invocation_id`
   ([#2372](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2372))
-- Drop support for instrumenting elasticsearch client < 6`
+- Drop support for instrumenting elasticsearch client < 6
   ([#2422](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2422))
 - `opentelemetry-instrumentation-wsgi` Add `http.method` to `span.name`
   ([#2425](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2425))