fix dsn

Author: giortzisg

docs/platforms/go/common/integrations/index.mdx

@@ -12,7 +12,7 @@ To disable default integrations, you can provide an empty list of integrations w
 
 ```go
 sentry.Init(sentry.ClientOptions{
-    Dsn: "https://[email protected]/0",
+    Dsn: "___PUBLIC_DSN___",
 	Integrations: func(i []sentry.Integration) []sentry.Integration {
 		return []sentry.Integration{}
 	},