Update environment variable formatting in values.yaml

Improved the formatting of the environment variable section in the
`values.yaml` file within the `charts/paperless-ngx` directory. The
change includes a reindentation of the `env` block to enhance readability
and maintain consistency. This adjustment does not affect functionality
or introduce any breaking changes, but it ensures that the YAML
structure remains clean and is easier to understand for future
modifications.

charts/paperless-ngx/values.yaml

@@ -19,10 +19,10 @@ controllers:
         tag: 2.20.0
         # -- Environment variables [[ref]](https://docs.paperless-ngx.com/configuration/)
         # @default -- See [values.yaml](./values.yaml)
-        env:
-          # -- Set the container timezone
-          TZ: UTC
-          # PAPERLESS_SECRET_KEY: ""
+      env:
+        # -- Set the container timezone
+        TZ: UTC
+        # PAPERLESS_SECRET_KEY: ""
 
 service:
   # -- Configures service settings for the chart.