docs: cleanup (#1745)

...ext/src/content/docs/llamaindex/modules/loading/index.mdx

...ext/src/content/docs/llamaindex/modules/loading/meta.json

...c/content/docs/llamaindex/modules/loading/node-parser.mdx

.../src/content/docs/llamaindex/tutorials/agents/1_setup.mdx

...ntent/docs/llamaindex/tutorials/agents/2_create_agent.mdx

...ontent/docs/llamaindex/tutorials/agents/3_local_model.mdx

...ontent/docs/llamaindex/tutorials/agents/4_agentic_rag.mdx

...tent/docs/llamaindex/tutorials/agents/5_rag_and_tools.mdx

...content/docs/llamaindex/tutorials/agents/6_llamaparse.mdx

...src/content/docs/llamaindex/tutorials/agents/7_qdrant.mdx

...nt/docs/llamaindex/tutorials/agents/images/agent_flow.png

...xt/src/content/docs/llamaindex/tutorials/agents/meta.json

...ext/src/content/docs/llamaindex/tutorials/basic_agent.mdx

.../next/src/content/docs/llamaindex/tutorials/local_llm.mdx

apps/next/src/content/docs/llamaindex/tutorials/meta.json

...cs/llamaindex/tutorials/rag/_static/concepts/indexing.jpg

...cs/llamaindex/tutorials/rag/_static/concepts/querying.jpg

...nt/docs/llamaindex/tutorials/rag/_static/concepts/rag.jpg

...xt/src/content/docs/llamaindex/tutorials/rag/concepts.mdx

.../next/src/content/docs/llamaindex/tutorials/rag/index.mdx