fix changelog

Author: justinianvoss22

.chloggen/sqlqueryreceiver-break-up-datasource-into-struct.yaml

@@ -8,8 +8,7 @@ component: sqlqueryreceiver
 note: Break up datasource into a struct with fields `host`, `port`, `database`, `username`, `password`, and `additional_params`.
 
 # Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
-issues:
-  - [39760]
+issues: [39760]
 
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