docs: fix api ref link generation (#22438)

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

docs/scripts/generate_api_reference_links.py

@@ -30,13 +30,18 @@ _DOCS_DIR = _CURRENT_PATH / "docs"
 def find_files(path):
     """Find all MDX files in the given path"""
     # Check if is file first
+    if ".ipynb_checkpoints" in str(path):
+        return
     if os.path.isfile(path):
         yield path
         return
     for root, _, files in os.walk(path):
         for file in files:
             if file.endswith(".mdx") or file.endswith(".md"):
-                yield os.path.join(root, file)
+                full = os.path.join(root, file)
+                if ".ipynb_checkpoints" in str(full):
+                    continue
+                yield full
 
 
 def get_full_module_name(module_path, class_name):
@@ -79,7 +84,7 @@ def main():
                 .replace(".md", "/")
             )
 
-            doc_url = f"https://python.langchain.com/docs/{relative_path}"
+            doc_url = f"https://python.langchain.com/v0.2/docs/{relative_path}"
             for import_info in file_imports:
                 doc_title = import_info["title"]
                 class_name = import_info["imported"]
@@ -97,7 +102,7 @@ def main():
 
 def _get_doc_title(data: str, file_name: str) -> str:
     try:
-        return re.findall(r"^#\s+(.*)", data, re.MULTILINE)[0]
+        return re.findall(r"^#\s*(.*)", data, re.MULTILINE)[0]
     except IndexError:
         pass
     # Parse the rst-style titles