Update pdf.py comment for PyPDFLoader (#10495)

PyPDF does not chunk at the character level to my understanding.

Description: PyPDF does not chunk at the character level, but instead
breaks up content by page. Fixup comment

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Co-authored-by: Eugene Yurtsev <eyurtsev@gmail.com>
Co-authored-by: Bagatur <baskaryan@gmail.com>

libs/langchain/langchain/document_loaders/parsers/pdf.py

@@ -13,7 +13,7 @@ if TYPE_CHECKING:
 
 
 class PyPDFParser(BaseBlobParser):
-    """Load `PDF` using `pypdf` and chunk at character level."""
+    """Load `PDF` using `pypdf`"""
 
     def __init__(self, password: Optional[Union[str, bytes]] = None):
         self.password = password

libs/langchain/langchain/document_loaders/pdf.py

@@ -135,9 +135,9 @@ class OnlinePDFLoader(BasePDFLoader):
 
 
 class PyPDFLoader(BasePDFLoader):
-    """Load `PDF using `pypdf` and chunks at character level.
+    """Load PDF using pypdf into list of documents.
 
-    Loader also stores page numbers in metadata.
+    Loader chunks by page and stores page numbers in metadata.
     """
 
     def __init__(