Lightspeed: update questionValidation config doc (#795)

* add RHDH system prompt

Signed-off-by: Stephanie <yangcao@redhat.com>

* rename configuration

Signed-off-by: Stephanie <yangcao@redhat.com>

* update question validation config doc

Signed-off-by: Stephanie <yangcao@redhat.com>

* add questionValidation in frontend config

Signed-off-by: Stephanie <yangcao@redhat.com>

* to be consistent with frontend

Signed-off-by: Stephanie <yangcao@redhat.com>

---------

Signed-off-by: Stephanie <yangcao@redhat.com>

Author: yangcao77

workspaces/lightspeed/plugins/lightspeed-backend/README.md

@@ -34,7 +34,8 @@ lightspeed:
   servers:
     - id: <server id>
       url: <serverURL>
-      token: <api key> # dummy token
+      token: <api key>
+      questionValidation: true # Optional - To disable question (prompt) validation set it to false.
 ```
 
 Example local development configuration:
@@ -47,6 +48,17 @@ lightspeed:
       token: 'js92n-ssj28dbdk902' # dummy token
 ```
 
+`questionValidation` is default to be enabled with topic restriction on RHDH related topics.
+If you want to disable the validation, set the value to be `false`.
+
+Example configuration to disable `questionValidation`:
+
+```yaml
+lightspeed:
+  questionValidation: false
+  servers: ... ...
+```
+
 #### Permission Framework Support
 
 The Lightspeed Backend plugin has support for the permission framework.

workspaces/lightspeed/plugins/lightspeed-backend/config.d.ts

@@ -38,7 +38,7 @@ export interface Config {
       token?: string;
     }>;
     /**
-     * If turn on query restriction validation.
+     * query restriction validation (Enabled by default).
      * @visibility frontend
      */
     questionValidation?: boolean;

workspaces/lightspeed/plugins/lightspeed/README.md

@@ -125,6 +125,17 @@ lightspeed:
   questionValidation: true # Optional - To disable question (prompt) validation set it to false.
 ```
 
+`questionValidation` is default to be enabled with topic restriction on RHDH related topics.
+If you want to disable the validation, set the value to be `false`.
+
+Example configuration to disable `questionValidation`:
+
+```yaml
+lightspeed:
+  questionValidation: false
+  servers: ... ...
+```
+
 ---
 
 #### To install this plugin locally in [backstage-showcase](https://github.com/janus-idp/backstage-showcase) application as a dynamic plugin.