fix(ins): removed colon

Author: ldecarvalho-doc

pages/instances/api-cli/creating-backups.mdx

@@ -87,7 +87,7 @@ The Backup feature is used to back up your Instance data. It creates an image of
   </TabsTab>
 
   <TabsTab label="API">
-    Run the following call to delete the image that contains a backup:
+    Run the following call to delete the image that contains a backup.
     ```
     DELETE https://api.scaleway.com/instance/v1/zones/<region>/images/<image_uid>
     ```