Only last pdf is getting ingested into the database

There is a small inaccuracy in ingest.py where documents are not loaded into the variable and the variable does not include the fact that the documents will be a list type rather than a single document.

`documents = []
for root, dirs, files in os.walk("docs"):
for file in files:
if file.endswith(".pdf"):
loader = PyPDFLoader(os.path.join(root, file))
documents.extend(loader.load())
print(file)`
The above code is a fix for the issue