community[patch]: docstrings (#16810)

- added missed docstrings
- formated docstrings to the consistent form

libs/community/langchain_community/document_loaders/chm.py

@@ -9,7 +9,7 @@ if TYPE_CHECKING:
 class UnstructuredCHMLoader(UnstructuredFileLoader):
     """Load `CHM` files using `Unstructured`.
 
-    CHM mean Microsoft Compiled HTML Help.
+    CHM means Microsoft Compiled HTML Help.
 
     Examples
     --------
@@ -35,6 +35,8 @@ class UnstructuredCHMLoader(UnstructuredFileLoader):
 
 
 class CHMParser(object):
+    """Microsoft Compiled HTML Help (CHM) Parser."""
+
     path: str
     file: "chm.CHMFile"
 

libs/community/langchain_community/document_loaders/parsers/vsdx.py

@@ -11,6 +11,8 @@ from langchain_community.document_loaders.blob_loaders import Blob
 
 
 class VsdxParser(BaseBlobParser, ABC):
+    """Parser for vsdx files."""
+
     def parse(self, blob: Blob) -> Iterator[Document]:  # type: ignore[override]
         """Parse a vsdx file."""
         return self.lazy_parse(blob)

libs/community/langchain_community/document_loaders/youtube.py

@@ -141,6 +141,8 @@ def _parse_video_id(url: str) -> Optional[str]:
 
 
 class TranscriptFormat(Enum):
+    """Transcript format."""
+
     TEXT = "text"
     LINES = "lines"