Use long options in curl

doc/administration/troubleshooting/tracing_correlation_id.md

@@ -51,7 +51,7 @@ interested in.
 If you're using curl then you can use the verbose option to show request and response headers, as well as other debug info.
 
 ```shell
-➜  ~ curl -v https://gitlab.example.com/api/v4/projects
+➜  ~ curl --verbose https://gitlab.example.com/api/v4/projects
 # look for a line that looks like this
 < x-request-id: 4rAMkV3gof4
 ```