fixed messed up tutorial index

docs/source/developer_notes/index.rst

@@ -76,6 +76,7 @@ Code path: :ref:`lightrag.core <apis-core>`.
 
 RAG Essentials
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
 RAG components
 ^^^^^^^^^^^^^^^^^^^
 
@@ -98,14 +99,14 @@ Code path: :ref:`lightrag.core<apis-core>`. For abstract classes:
      - ``ModelClient`` is the protocol and base class for LightRAG to **integrate all models**, either APIs or local, LLMs or Embedding models or any others.
    * - :doc:`generator`
      - The orchestrator for LLM prediction. It streamlines three components: `ModelClient`, `Prompt`, and `output_processors` and works with optimizer for prompt optimization.
-     - The **center component** that orchestrates the model client(LLMs in particular), prompt, and output processors for format parsing or any post processing.
    * - :doc:`output_parsers`
      - The component that parses the output string to structured data.
    * - :doc:`embedder`
      - The component that orchestrates model client (Embedding models in particular) and output processors.
    * - :doc:`retriever`
      - The base class for all retrievers who in particular retrieve relevant documents from a given database to add **context** to the generator.
 
+
 Data Pipeline and Storage
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^