removes extra period from et al.

examples/Search_augmented_by_query_generation_and_embeddings_reranking.ipynb

@@ -281,7 +281,7 @@
     "\n",
     "# 2. Re-rank\n",
     "\n",
-    "Drawing inspiration from [HyDE (Gao et. al.)](https://arxiv.org/abs/2212.10496), we first generate a hypothetical ideal answer to rerank our compare our results against. This ensures that we’re prioritizing results that might provide good answers, rather than those that are similar to our question. Here’s the prompt we use to generate our hypothetical answer.\n"
+    "Drawing inspiration from [HyDE (Gao et al.)](https://arxiv.org/abs/2212.10496), we first generate a hypothetical ideal answer to rerank our compare our results against. This ensures that we’re prioritizing results that might provide good answers, rather than those that are similar to our question. Here’s the prompt we use to generate our hypothetical answer.\n"
    ]
   },
   {