Fix typo on new debugging service tip

docs/user-guide/debugging-services.md

@@ -260,9 +260,9 @@ debugging your own `Service`, debug DNS.
 
 Check if the container image can resolve DNS via `search`.
 
-Alpine Linux for example uses `musl-libc` and as such does not support the
-`search` keyword in `resolv.conf` and if you want to use is as base image you
-will need to get an specially built for Kubernetes.
+For example, Alpine Linux uses `musl-libc` and does not support the `search`
+keyword in `resolv.conf`. If you want to use Alpine as base image you will need
+to get an specially built for Kubernetes.
 
 ## Does the Service work by IP?
 
@@ -329,6 +329,7 @@ $ kubectl get service hostnames -o json
 ```
 
 Also, check:
+
 * Is the port you are trying to access in `spec.ports[]`?
 * Is the `targetPort` correct for your `Pod`s?
 * If you meant it to be a numeric port, is it a number (9376)