docs(nextcloud): update installation notes (#16380)

**Description**
Changes ingress configuration to a hard requirement and remove
instructions about switch to ClusterIP.

⚒️ Fixes  # 

**⚙️ Type of change**

- [ ] ⚙️ Feature/App addition
- [ ] 🪛 Bugfix
- [ ] ⚠️ Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] 🔃 Refactor of current code

**🧪 How Has This Been Tested?**

**📃 Notes:**

**✔️ Checklist:**

- [ ] ⚖️ My code follows the style guidelines of this project
- [ ] 👀 I have performed a self-review of my own code
- [ ] #️⃣ I have commented my code, particularly in hard-to-understand
areas
- [ ] 📄 I have made corresponding changes to the documentation
- [ ] ⚠️ My changes generate no new warnings
- [ ] 🧪 I have added tests to this description that prove my fix is
effective or that my feature works
- [ ] ⬆️ I increased versions for any altered app according to semantic
versioning

**➕ App addition**

If this PR is an app addition please make sure you have done the
following.

- [ ] 🪞 I have opened a PR on
[truecharts/containers](https://github.com/truecharts/containers) adding
the container to TrueCharts mirror repo.
- [ ] 🖼️ I have added an icon in the Chart's root directory called
`icon.png`

---

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charts/stable/nextcloud/docs/installation-notes.md

@@ -4,7 +4,7 @@
 
 1. The cloudnative-pg operator is required from the operator train. More information can be
    found on our [getting started guide](https://truecharts.org/manual/SCALE/guides/getting-started#cnpg-operator-installation-and-migration-guide-for-older-users).
-2. While nextcloud can run without ingress setup a lot of features will not work. More information can be
+2. Ingress is required to be configured. The preferred and supported method for ingress is Traefik. More information can be
    found on our [getting started guide](https://truecharts.org/manual/SCALE/guides/getting-started#traefik-installation-for-ingress--reverse-proxy-support-with-truecharts-apps).
 
 :::caution SNAPSHOT DIRECTORY VISIBILITY
@@ -40,10 +40,6 @@ The following configurations must be set during initially setup for nextcloud to
 4. Only Office (document editor for Nextcloud, this does **NOT** deploy the Only Office container.
    You will need to have a separate installation.
 
-### Networking and Services
-
-If you are setting up Ingress (highly recommended and the only method supported) then change the Service Type to ClusterIP from LoadBalancer. Nextcloud will not work with Ingress configured unless ClusterIP is set.
-
 ### Storage
 
 You can change the User Data Storage option to your preference here if you previously setup the proper dataset permissions. All other Storage should remain the default of PVC.