docs: Fix typo (#801)

Author: jacoblee93

docs/observability/index.mdx

@@ -135,7 +135,7 @@ it has an LLM call!
 
 ## 5. Trace OpenAI calls
 
-The first thing you might want to trace is all your OpenAI calls. LangSmith makes this easy with the [`wrap_openai`](https://docs.smith.langchain.com/reference/python/wrappers/langsmith.wrappers._openai.wrap_openai_) (Python) or [`wrapOpenAI`](https://docs.smith.langchain.com/reference/js/functions/wrappers_openai.wrapOpenAI) (TypeScript) wrappers.
+The first thing you might want to trace is all your OpenAI calls. LangSmith makes this easy with the [`wrap_openai`](https://docs.smith.langchain.com/reference/python/wrappers/langsmith.wrappers._openai.wrap_openai) (Python) or [`wrapOpenAI`](https://docs.smith.langchain.com/reference/js/functions/wrappers_openai.wrapOpenAI) (TypeScript) wrappers.
 All you have to do is modify your code to use the wrapped client instead of using the `OpenAI` client directly.
 
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@@ -218,7 +218,7 @@ This will produce a trace of just the OpenAI call in LangSmith's default tracing
 
 ## 6. Trace entire application
 
-You can also use the [`traceable`] decorator ([Python](https://docs.smith.langchain.com/reference/python/run_helpers/langsmith.run_helpers.traceable) or [TypeScript](https://langsmith-docs-bdk0fivr6-langchain.vercel.app/reference/js/functions/traceable.traceable)) to trace your entire application instead of just the LLM calls.
+You can also use the `traceable` decorator ([Python](https://docs.smith.langchain.com/reference/python/run_helpers/langsmith.run_helpers.traceable) or [TypeScript](https://langsmith-docs-bdk0fivr6-langchain.vercel.app/reference/js/functions/traceable.traceable)) to trace your entire application instead of just the LLM calls.
 
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   groupId="client-language"