chart(docs): restore trailing newline in CONFIGURATION.md

helm-docs --skip-version-footer strips the footer plus the blank
line that preceded it. Re-add the trailing newline to match the
prior file shape.

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

Author: DrFaust92

charts/selenium-grid/CONFIGURATION.md

@@ -811,3 +811,4 @@ A Helm chart for creating a Selenium Grid Server in Kubernetes
 | redis.image.repository | string | `"bitnamilegacy/redis"` |  |
 | redis.architecture | string | `"standalone"` | Setup architecture |
 | redis.auth.enabled | bool | `false` | Disable authentication due to implementation still not supporting it |
+