docs: remove warnings/update diagrams (#1746)

* remove warnings/udpate diagrams

* replace get_relevant_documents with invoke

docs/docs/tutorials/llm-compiler/LLMCompiler.ipynb

@@ -78,6 +78,7 @@
   },
   {
    "cell_type": "markdown",
+   "id": "3a0a8450",
    "metadata": {},
    "source": [
     "## Helper Files\n",