Code refactoring after CR

Author: bohdan-harniuk

resources/magento2/common.properties

@@ -70,5 +70,5 @@ common.template.filename=Template File Name
 common.template.subject=Email Subject
 common.template.type=Email Type
 common.diagnostic.reportButtonText=Report Me
-common.diagnostic.reportSubmittedTitle=Report Successfully Submitted
+common.diagnostic.reportSubmittedTitle=The report is successfully submitted!
 common.diagnostic.reportSubmittedMessage=Thank you for submitting your report! We will check it as soon as possible.