docs: docstrings langchain_community update (#14889)

Addded missed docstrings. Fixed inconsistency in docstrings.

**Note** CC @efriis 
There were PR errors on
`langchain_experimental/prompt_injection_identifier/hugging_face_identifier.py`
But, I didn't touch this file in this PR! Can it be some cache problems?
I fixed this error.

libs/community/langchain_community/document_loaders/docusaurus.py

@@ -5,11 +5,12 @@ from langchain_community.document_loaders.sitemap import SitemapLoader
 
 
 class DocusaurusLoader(SitemapLoader):
-    """
-    Loader that leverages the SitemapLoader to loop through the generated pages of a
+    """Load from Docusaurus Documentation.
+
+    It leverages the SitemapLoader to loop through the generated pages of a
     Docusaurus Documentation website and extracts the content by looking for specific
     HTML tags. By default, the parser searches for the main content of the Docusaurus
-    page, which is normally the <article>. You also have the option to define your own
+    page, which is normally the <article>. You can also define your own
     custom HTML tags by providing them as a list, for example: ["div", ".main", "a"].
     """
 
@@ -19,8 +20,8 @@ class DocusaurusLoader(SitemapLoader):
         custom_html_tags: Optional[List[str]] = None,
         **kwargs: Any,
     ):
-        """
-        Initialize DocusaurusLoader
+        """Initialize DocusaurusLoader
+
         Args:
             url: The base URL of the Docusaurus website.
             custom_html_tags: Optional custom html tags to extract content from pages.
@@ -39,7 +40,7 @@ class DocusaurusLoader(SitemapLoader):
         )
 
     def _parsing_function(self, content: Any) -> str:
-        """Parses specific elements from a Docusarus page."""
+        """Parses specific elements from a Docusaurus page."""
         relevant_elements = content.select(",".join(self.custom_html_tags))
 
         for element in relevant_elements: