chore: update links to LangChain how-to guides in issue templates (#32052)

Author: mdrxy

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -15,7 +15,7 @@ body:
         * [LangChain Forum](https://forum.langchain.com/),
         * [LangChain Github Issues](https://github.com/langchain-ai/langchain/issues?q=is%3Aissue),
         * [LangChain documentation with the integrated search](https://python.langchain.com/docs/get_started/introduction),
-        * [LangChain how-to guides](https://langchain-ai.github.io/langgraph/how-tos/),
+        * [LangChain how-to guides](https://python.langchain.com/docs/how_to/),
         * [API Reference](https://python.langchain.com/api_reference/),
         * [LangChain ChatBot](https://chat.langchain.com/)
         * [GitHub search](https://github.com/langchain-ai/langchain),

.github/ISSUE_TEMPLATE/documentation.yml

@@ -23,7 +23,7 @@ body:
         * [LangChain Forum](https://forum.langchain.com/),
         * [LangChain Github Issues](https://github.com/langchain-ai/langchain/issues?q=is%3Aissue),
         * [LangChain documentation with the integrated search](https://python.langchain.com/docs/get_started/introduction),
-        * [LangChain how-to guides](https://langchain-ai.github.io/langgraph/how-tos/),
+        * [LangChain how-to guides](https://python.langchain.com/docs/how_to/),
         * [API Reference](https://python.langchain.com/api_reference/),
         * [LangChain ChatBot](https://chat.langchain.com/)
         * [GitHub search](https://github.com/langchain-ai/langchain),