SORMAS-Foundation#3488 rename caption

Author: FredrikSchäferVitagroup

sormas-api/src/main/resources/captions.properties

@@ -1117,7 +1117,7 @@ importCancelImport=Cancel import
 LabMessage=Lab Message
 LabMessage.labMessageDetails=Lab message details
 LabMessage.labSampleId=Lab sample ID
-LabMessage.messageDateTime=Date message was sent
+LabMessage.messageDateTime=Message date
 LabMessage.personBirthDateDD=Day of birth
 LabMessage.personBirthDateMM=Month of birth
 LabMessage.personBirthDateYYYY=Year of birth