docs(nextcloud): restore guide images (#21090)

**Description**
Restore images to the backup, restore and migration guide.

⚒️ Fixes  # <!--(issue)-->

**⚙️ 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
- [X] I made sure the title starts with `feat(chart-name):`,
`fix(chart-name):` or `chore(chart-name):`

**➕ App addition**

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

- [ ] 🖼️ I have added an icon in the Chart's root directory called
`icon.png`

---

_Please don't blindly check all the boxes. Read them and only check
those that apply.
Those checkboxes are there for the reviewer to see what is this all
about and
the status of this PR with a quick glance._

charts/premium/nextcloud/docs/backup-restore-migrate-guide.md

@@ -28,13 +28,13 @@ If you have not already done so install PGAdmin and the [tcdbinfo.sh script](/sc
    bash tcdbinfo.sh
    ```
 
-   <!-- ![tcdbinfo-output](./img/tcdbinfo-output.png) -->
+![tcdbinfo-output](./img/tcdbinfo-output.png)
 
 2. Add Nextcloud to PGAdmin using the connection info from previous step.
-   <!-- ![pgadmin-connection1](./img/pgadmin-connection1.png) -->
-   <!-- ![pgadmin-connection2](./img/pgadmin-connection2.png) -->
+![pgadmin-connection1](./img/pgadmin-connection1.png)
+![pgadmin-connection2](./img/pgadmin-connection2.png)
 3. Backup Nextcloud database.
-   <!-- ![pgadmin-backup](./img/pgadmin-backup.png) -->
+![pgadmin-backup](./img/pgadmin-backup.png)
 
 ### Backup User Data
 
@@ -50,7 +50,7 @@ This step is not required but to have a clean installation remove all UserData f
 ls -la
 ```
 
-<!-- ![userdata-old](./img/userdata-old.png) -->
+![userdata-old](./img/userdata-old.png)
 
 :::caution
 
@@ -66,7 +66,7 @@ rm -rf <folder>
 rm .ocdata .htaccess index.html nextcloud.log
 ```
 
-<!-- ![userdata-clean](./img/userdata-clean.png) -->
+![userdata-clean](./img/userdata-clean.png)
 
 :::
 
@@ -88,7 +88,7 @@ If you do not install with a unique user the install will fail because Nexctloud
 
 Setup Nextcloud User Data storage with your previous User Data dataset or the dataset you copied your User Data to.
 
-<!-- ![userdata-setting](./img/userdata-setting.png) -->
+![userdata-setting](./img/userdata-setting.png)
 
 ### Restore Database
 
@@ -106,13 +106,13 @@ Wait for Nextcloud to fully deploy before proceeding.
 
 2. Add Nextcloud to PGAdmin as guided in [steps 1 and 2 here](#backup-database).
 3. In PGAdmin right click on the database and select restore as shown below.
-   <!-- ![pgadmin-restore1](./img/pgadmin-restore1.png) -->
+![pgadmin-restore1](./img/pgadmin-restore1.png)
 4. Select the database backup you created previously.
-   <!-- ![pgadmin-restore2](./img/pgadmin-restore2.png) -->
+![pgadmin-restore2](./img/pgadmin-restore2.png)
 5. Configure Data/Objects as shown below.
-   <!-- ![pgadmin-restore3](./img/pgadmin-restore3.png) -->
+![pgadmin-restore3](./img/pgadmin-restore3.png)
 6. Configure Options as shown below and click restore.
-   <!-- ![pgadmin-restore4](./img/pgadmin-restore4.png) -->
+![pgadmin-restore4](./img/pgadmin-restore4.png)
 
 :::caution[PGAdmin Error]
 
@@ -135,7 +135,7 @@ Wait for Nextcloud to fully deploy before proceeding.
 :::
 
 1. Open a shell for the Nextcloud main pod as shown below. Ensure your are selecting the correct pod it should just say nextcloud for both Pods (followed by random characters only) and Containers as shown below.
-   <!-- ![nextcloud-cli](./img/nextcloud-cli.png) -->
+![nextcloud-cli](./img/nextcloud-cli.png)
 2. Run the following commands in the Nextcloud shell.
 
 ```bash