docs: fix typo in migration guide: migrate_agent.ipynb (#28227)

PR Title: `docs: fix typo in migration guide`

PR Message:
- **Description**: This PR fixes a small typo in the "How to Migrate
from Legacy LangChain Agents to LangGraph" guide. "In this cases" -> "In
this case"
- **Issue**: N/A (no issue linked for this typo fix)
- **Dependencies**: None
- **Twitter handle**: N/A
This commit is contained in:
Soham Das 2024-11-20 08:44:22 -08:00 committed by GitHub
parent 16918842bf
commit 4027da1b6e
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@ -331,7 +331,7 @@
"metadata": {},
"source": [
"We can also pass in an arbitrary function. This function should take in a list of messages and output a list of messages.\n",
"We can do all types of arbitrary formatting of messages here. In this cases, let's just add a SystemMessage to the start of the list of messages."
"We can do all types of arbitrary formatting of messages here. In this case, let's just add a SystemMessage to the start of the list of messages."
]
},
{