Fix egress example and RBAC typo (#374)

Found a typo in rbac and issue with example while preparing walk-through
docs.

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<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Bug Fixes**
  * Corrected permissions for accessing NetworkEgress status resources.
* **Examples**
* Updated the NetworkEgress example to target a service by fully
qualified domain name instead of a static IP address.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

charts/netbird-operator/templates/rbac.yaml

@@ -60,7 +60,7 @@ rules:
   - groups/status
   - networkrouters/status
   - networkresources/status
-  - networkregresses/status
+  - networkegresses/status
   - sidecarprofiles/status
   - clusterproxies/status
   verbs:

examples/network/networkegress.yaml

@@ -8,8 +8,8 @@ spec:
     name: prod
     namespace: netbird
   target:
-    ip:
-      address: 10.96.92.40
+    fqdn:
+      hostname: nginx.default.prod.company.internal
   ports:
     - name: http
       port: 80