docs: fix release smoke test failures

docs/user/develop/framework/service.md

@@ -117,7 +117,7 @@ This prevents a plugin from calling a service that no longer exists.
   name: '@deepseek-ai/cordis-plugin-group'
   group: true
   isolate:
-    bash: true
+    shell: true
   config:
     - name: '@deepseek-ai/dsh-bash-local'
       config:
@@ -128,7 +128,7 @@ This prevents a plugin from calling a service that no longer exists.
   name: '@deepseek-ai/cordis-plugin-group'
   group: true
   isolate:
-    bash: true
+    shell: true
   config:
     - name: '@deepseek-ai/dsh-bash-local'
       config: