fix: Fix typo in env var name (#48)

docs/setup.md

@@ -49,7 +49,7 @@ Task runner config fields:
 
 - Optionally, specify the task broker's URI (i.e. n8n instance's URI) by setting `N8N_TASK_BROKER_URI`. Default is `http://127.0.0.1:5679`.
 
-- Optionally, specify the port for the launcher's health check server by setting `N8N_LAUNCHER_HEALTCHECK_PORT`. Default is `5680`. When overriding this port, be mindful of port conflicts - by default, the n8n instance uses `5678` for its regular server and `5679` for its task broker server, and the runner uses `5681` for its healthcheck server. 
+- Optionally, specify the port for the launcher's health check server by setting `N8N_LAUNCHER_HEALTH_CHECK_PORT`. Default is `5680`. When overriding this port, be mindful of port conflicts - by default, the n8n instance uses `5678` for its regular server and `5679` for its task broker server, and the runner uses `5681` for its healthcheck server.
 
 - Optionally, configure [Sentry error tracking](https://docs.sentry.io/platforms/go/configuration/options/) with these env vars:
 

internal/config/config.go

@@ -19,7 +19,7 @@ var cfg Config
 
 const (
 	// EnvVarHealthCheckPort is the env var for the port for the launcher's health check server.
-	EnvVarHealthCheckPort = "N8N_LAUNCHER_HEALTCHECK_PORT"
+	EnvVarHealthCheckPort = "N8N_LAUNCHER_HEALTH_CHECK_PORT"
 )
 
 // Config holds the full configuration for the launcher.
@@ -39,7 +39,7 @@ type Config struct {
 	TaskBrokerURI string `env:"N8N_TASK_BROKER_URI, default=http://127.0.0.1:5679"`
 
 	// HealthCheckServerPort is the port for the launcher's health check server.
-	HealthCheckServerPort string `env:"N8N_LAUNCHER_HEALTCHECK_PORT, default=5680"`
+	HealthCheckServerPort string `env:"N8N_LAUNCHER_HEALTH_CHECK_PORT, default=5680"`
 
 	// Runner is the runner config for the task runner, obtained from:
 	// `/etc/n8n-task-runners.json`.