chore: update Milvus on examples and references to deprecated method (#2664)

* docs(examples): update the set up of Milvus Lite

Signed-off-by: Cesar Berrospi Ramis <ceb@zurich.ibm.com>

* chore: remove references to deprecated save_as_document_tokens

Signed-off-by: Cesar Berrospi Ramis <ceb@zurich.ibm.com>

---------

Signed-off-by: Cesar Berrospi Ramis <ceb@zurich.ibm.com>

docs/examples/batch_convert.py

@@ -79,7 +79,7 @@ def export_documents(
                     output_dir / f"{doc_filename}.html",
                     image_mode=ImageRefMode.EMBEDDED,
                 )
-                conv_res.document.save_as_document_tokens(
+                conv_res.document.save_as_doctags(
                     output_dir / f"{doc_filename}.doctags.txt"
                 )
                 conv_res.document.save_as_markdown(
@@ -98,7 +98,7 @@ def export_documents(
 
                 # Export Docling document format to doctags:
                 with (output_dir / f"{doc_filename}.doctags.txt").open("w") as fp:
-                    fp.write(conv_res.document.export_to_document_tokens())
+                    fp.write(conv_res.document.export_to_doctags())
 
                 # Export Docling document format to markdown:
                 with (output_dir / f"{doc_filename}.md").open("w") as fp:

docs/examples/rag_haystack.ipynb

@@ -85,7 +85,7 @@
     }
    ],
    "source": [
-    "%pip install -q --progress-bar off --no-warn-conflicts docling-haystack haystack-ai docling pymilvus milvus-haystack sentence-transformers python-dotenv"
+    "%pip install -q --progress-bar off --no-warn-conflicts docling-haystack haystack-ai docling \"pymilvus[milvus-lite]\" milvus-haystack sentence-transformers python-dotenv"
    ]
   },
   {

docs/examples/rag_milvus.ipynb

@@ -52,7 +52,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "! pip install --upgrade pymilvus docling openai torch"
+    "! pip install --upgrade \"pymilvus[milvus-lite]\" docling openai torch"
    ]
   },
   {