fix

docs/content/components/form/fieldgroup/field-group.mdx

@@ -9,6 +9,7 @@ The `<FieldGroup>` designed primarily for handling of complex forms and semantic
   <SectionMessage.Title>For your information!</SectionMessage.Title>
   <SectionMessage.Content>
 The `<FieldGroup>` is a component to layout the label and the fieldbase itself. On that you can use `labelWidth` which is a string type to set the width of the label. Because the label is set to the left side in the `core-theme`, it has only an impact on that.
+</SectionMessage.Content>
 </SectionMessage>
 
 ### Import