style: fix typo

app/views/admin/application_settings/_logging.html.haml

@@ -5,7 +5,7 @@
     %strong
       NOTE:
     These settings will be removed from the UI in a GitLab 12.0 release and made available within gitlab.yml.
-    The specific client side DSN setting is already handled as a component from a Sentry perspective anb will be removed.
+    The specific client side DSN setting is already handled as a component from a Sentry perspective and will be removed.
     In addition, you will be able to define a Sentry Environment to differentiate between multiple deployments. For example, development, staging, and production.
 
   %fieldset