Changes to status mapping diagrams for email and texts

Author: jakecosgrove

docs/pages/using-nhs-notify/message-status.md

@@ -146,7 +146,7 @@ Find out the supplier statuses you can get and how they map to the channel statu
 {% include components/image-with-caption.html
     src="text-and-email-status-mapping-1.svg"
     alt="A diagram showing how supplier statuses for text messages map to channel statuses."
-    caption="A diagram showing how supplier statuses for text messages map to channel statuses."
+    caption="A diagram showing how supplier statuses for text  messages map to channel statuses."
 %}
 
 #### Letter status supplier descriptions