Fixes a error in the assetIds Query Parameter of the /shells endpoint #336

Job	Run time
Test BaSyx Kafka Example	2m 3s
Test BaSyx Dynamic RBAC Example	4m 5s
Test BaSyx Reverse Proxy Example	1m 22s
Test BaSyx Client Example	3m 21s
Test BaSyx Secured Example	2m 10s
Test BaSyx Operation Delegation Example	2m 59s
Test BaSyx Query Language Example	2m 54s
Test BaSyx CAD file Example	1m 34s
Test BaSyx Minimal Example	1m 49s
Test BaSyx Node-RED Example	1m 55s
Test BaSyx DataBridge Example	1m 57s
	26m 9s

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