fix: Typo on Claude Code tracing docs (#937)

Also adding a note on how OTEL events are limited in information

Author: nhuang-lc

docs/observability/how_to_guides/claude_code.mdx

@@ -24,7 +24,7 @@ export OTEL_LOGS_EXPORTER=otlp
 export OTEL_EXPORTER_OTLP_LOGS_PROTOCOL=http/json
 
 // Claude Code Logs are translated to Spans by LangSmith
-export OTEL_EXPORTER_OTLP_LOGS_ENDPOINT=http://api.smith.langchain.com/otel/v1/claude_code
+export OTEL_EXPORTER_OTLP_LOGS_ENDPOINT=https://api.smith.langchain.com/otel/v1/claude_code
 
 // Pass your API key and desired tracing project through headers
 export OTEL_EXPORTER_OTLP_HEADERS="x-api-key=<api-key>,Langsmith-Project=<project-name>"
@@ -36,6 +36,10 @@ export OTEL_LOG_USER_PROMPTS=1
 claude
 ```
 
+:::note Claude Code events
+Claude Code emits [open telemetry standard events](https://docs.anthropic.com/en/docs/claude-code/monitoring-usage#events) for monitoring usage, but this does not include the actual prompts and messages that go to the LLM.
+:::
+
 :::note Self-hosted deployments
 If you're self-hosting LangSmith, replace the base endpoint with your LangSmith api endpoint and append `/api/v1`. For example: `OTEL_EXPORTER_OTLP_LOGS_ENDPOINT=https://ai-company.com/api/v1/otel/v1/claude_code`
 :::