Fixed docs rendering of --query-timeout

When using single backticks, the documentation generator tries
to create automatic links (As explained in README). This goes
horribly wrong somehow, and so after looking at other parts
of the docs, it seems we usually use triple backticks for
command line options, to prevent automatic linking.

Changelog: None
Ticket: CFE-3254
Signed-off-by: Ole Herman Schumacher Elgesem <ole@northern.tech>

reference/components/cf-hub.markdown

@@ -119,7 +119,7 @@ The total time it uses for one host before giving up can be up to 10 times the c
 
 Also note that this value is passed to the underlying OS code (`select()`), there is no guarantee that it will wait for that long.
 
-This parameter can also be set using the command line option, `--query-timeout`.
+This parameter can also be set using the command line option, ```--query-timeout```.
 If specified in both policy and command line, the command line option takes precedence.
 If one of the options (command line or policy) specifies `0`, the other one is used.
 If both are not specified (or `0`), the default is used.