fix(docs): resolve markdownlint errors

- Fix ordered list numbering in MIGRATION.md (1,2,3 instead of 3,4,5)
- Add trailing newline to MIGRATION.md
- Add language specifier (text) to fenced code block in README.md

Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Aleksei Sviridkin <f@lex.la>

charts/jellyfin/MIGRATION.md

@@ -10,9 +10,10 @@
 extraPodLabels -> podLabels
 extraPodAnnotations -> podAnnotations
 ```
-3. The `extraEnvVars` key has been moved and renamed to `jellyfin.env`.
-4. `extraVolumes` has been moved to `volumes`, and `extraVolumeMounts` has been moved to `volumeMounts`.
-5. The `extraExistingClaimMounts` key has been removed, as it can now be represented with `volumes` and `volumeMounts`.
+
+1. The `extraEnvVars` key has been moved and renamed to `jellyfin.env`.
+2. `extraVolumes` has been moved to `volumes`, and `extraVolumeMounts` has been moved to `volumeMounts`.
+3. The `extraExistingClaimMounts` key has been removed, as it can now be represented with `volumes` and `volumeMounts`.
 
 ### Service
 
@@ -41,4 +42,4 @@ PVC creation is now enabled by default to prevent data loss when the chart is us
 
 ### Probes
 
-The liveness and readiness probes are now always enabled to ensure proper Kubernetes lifecycle management. Adjust the values accordingly if you have a large library.
+The liveness and readiness probes are now always enabled to ensure proper Kubernetes lifecycle management. Adjust the values accordingly if you have a large library.

charts/jellyfin/README.md

@@ -429,7 +429,8 @@ For more configuration options, see the full values documentation in [values.yam
 ### inotify Instance Limit Reached
 
 **Problem:** Jellyfin crashes with error:
-```
+
+```text
 System.IO.IOException: The configured user limit (128) on the number of inotify instances has been reached
 ```