Minor changes

Author: pabel-rh

modules/configuring/proc-injecting-custom-files-and-environment-variables-into-backstage-containers.adoc

@@ -2,13 +2,11 @@
 :_mod-docs-content-type: PROCEDURE
 
 [id="proc-injecting-custom-files-and-environment-variables-into-backstage-containers"]
-= Injecting custom files and environment variables into {backstage} containers
+= Injecting extra files and environment variables into {backstage} containers
 
-You must use the `spec.application` path to configure the injection of custom files and environment variables into your {backstage} Pod containers. This ensures necessary configurations, credentials, and dependencies (such as certificates) are available at runtime.
+You must use the `spec.application.extraFiles|extraEnvs.configMaps|secrets.containers` path to configure the injection of extra files and environment variables into your {backstage} Pod containers. This ensures necessary configurations, credentials, and dependencies (such as certificates) are available at runtime.
 
-You can mount extra files, sourced from pre-created Kubernetes ConfigMaps or Secrets, to your {backstage} Pod containers using the `spec.application.extraFiles` path.
-
-By default, files mount only to the `backstage-backend` container. You can also specify other targets, including a list of containers by name (such as `dynamic-plugin-install` or custom sidecars) or opt to in all containers in the {backstage} Pod.
+By default, files mount only to the `backstage-backend` container. If the `containers` field is not specified, the volume mounts to the `backstage-backend` container only. You can also specify other targets, including a list of containers by name (such as `dynamic-plugin-install` or custom sidecars) or opt to in all containers in the {backstage} Pod.
 
 . To mount extra files, apply the configuration to your `{product-custom-resource-type} custom resource (CR)` as shown in the following code:
 +
@@ -38,7 +36,7 @@ spec:
           mountPath: /my/secret2/path
 ----
 
-If the `containers` field is not specified, the volume mounts to the `backstage-backend` container only. The following explicit options are supported:
+The following explicit options are supported:
 
 * No or empty field: Mounts only to the `backstage-backend` container.
 * `*` (asterisk) as the first and only array element: Mounts to all containers.