nit: pgvector python example notebook, fix variable reference (#5595)

# Your PR Title (What it does)

Fixes the pgvector python example notebook : one of the variables was
not referencing anything

## Before submitting

## Who can review?

Community members can review the PR once tests pass. Tag
maintainers/contributors who might be interested:

VectorStores / Retrievers / Memory
  - @dev2049
This commit is contained in:
C.J. Jameson 2023-06-03 15:29:34 -07:00 committed by GitHub
parent b201cfaa0f
commit 4e71a1702b
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@ -246,7 +246,7 @@
"outputs": [],
"source": [
"db = PGVector.from_documents(\n",
" documents=data,\n",
" documents=docs,\n",
" embedding=embeddings,\n",
" collection_name=collection_name,\n",
" connection_string=connection_string,\n",