doc: update user-guide network section
- Agents connect to local API on port `tcp/8080` (only relevant )
+!!! warning
+ If there is an error in the agent configuration, it will also cause the Local API to fail if both of them are running in the same machine !
+ Both components need proper configuration to run (we decide to keep this behavior to detect agent or local API errors on start).
+
## Local API -> Central API
- Central API is reached on port `tcp/443` by Local API. The FQDN is `api.crowdsec.net`
