docs: add generated plugin reference pages

docs/plugins/reference/litellm.md

@@ -0,0 +1,23 @@
+---
+summary: "Adds LiteLLM model provider support to OpenClaw."
+read_when:
+  - You are installing, configuring, or auditing the litellm plugin
+title: "LiteLLM plugin"
+---
+
+# LiteLLM plugin
+
+Adds LiteLLM model provider support to OpenClaw.
+
+## Distribution
+
+- Package: `@openclaw/litellm-provider`
+- Install route: included in OpenClaw
+
+## Surface
+
+providers: litellm; contracts: imageGenerationProviders
+
+## Related docs
+
+- [litellm](/providers/litellm)