refactor: Extract help docs url into the .env

Author: cuixiaorui

apps/client/.env.example

@@ -3,3 +3,4 @@ LOGTO_ENDPOINT="http://localhost:3010/"
 BACKEND_ENDPOINT="http://localhost:3001/"
 LOGTO_SIGN_IN_REDIRECT_URI="http://localhost:3000/callback"
 LOGTO_SIGN_OUT_REDIRECT_URI="http://localhost:3000/"
+HELP_DOCS_URL="https://earthworm-docs.cuixueshe.com/get-started/"

apps/client/nuxt.config.ts

@@ -43,7 +43,7 @@ export default defineNuxtConfig({
       backendEndpoint: process.env.BACKEND_ENDPOINT || "",
       signInRedirectURI: process.env.LOGTO_SIGN_IN_REDIRECT_URI || "",
       signOutRedirectURI: process.env.LOGTO_SIGN_OUT_REDIRECT_URI || "",
-      helpDocsURL: "https://earthworm-docs.cuixueshe.com/get-started/",
+      helpDocsURL: process.env.HELP_DOCS_URL || "",
     },
   },
 });