docs: add backticks around example URL (#42536)

docs/api/command-line-switches.md

@@ -279,7 +279,7 @@ Aliased to `--debug[=[host:]port`.
 
 Specify ways of the inspector web socket url exposure.
 
-By default inspector websocket url is available in stderr and under /json/list endpoint on http://host:port/json/list.
+By default inspector websocket url is available in stderr and under /json/list endpoint on `http://host:port/json/list`.
 
 ### `--no-deprecation`