docs: Fix the broken link to Extraction page (#14806)

**Description:** fixing a broken link to the extraction doc page

docs/docs/modules/chains/how_to/openai_functions.ipynb

@@ -535,7 +535,7 @@
     "## Other Chains using OpenAI functions\n",
     "\n",
     "There are a number of more specific chains that use OpenAI functions.\n",
-    "- [Extraction](/docs/modules/chains/additional/extraction): very similar to structured output chain, intended for information/entity extraction specifically.\n",
+    "- [Extraction](/docs/use_cases/extraction): very similar to structured output chain, intended for information/entity extraction specifically.\n",
     "- [Tagging](/docs/use_cases/tagging): tag inputs.\n",
     "- [OpenAPI](/docs/use_cases/apis/openapi_openai): take an OpenAPI spec and create + execute valid requests against the API, using OpenAI functions under the hood.\n",
     "- [QA with citations](/docs/use_cases/question_answering/qa_citations): use OpenAI functions ability to extract citations from text."