[CI] typo in ci-linux documentation .

[Aneesh K. K.V <ane...@di...>]

Hi, 

Registering a new ICS Channel
==============================
1) Declare the new channel using type ics_chan_t (typedef int).

	#include <cluster/ics.h>
	ics_chant_t ics_test_chan;
	^^^^^^^^
		-----> should be ics_chan_t 

-aneesh