Merge pull request #592 from camunda-community-hub/fix-docs

docs: add HealthCheckResponse to reference

Author: dimastbk

docs/zeebe_adapter_reference.rst

@@ -66,3 +66,8 @@ Zeebe GRPC Responses
    :members:
    :undoc-members:
    :member-order: bysource
+
+.. autoclass:: pyzeebe.grpc_internals.types.HealthCheckResponse
+   :members:
+   :undoc-members:
+   :member-order: bysource