Changed title of trickle ICE section in installation guide
Changed title of trickle ICE section in installation guide

Change-Id: I667f97107850c52d1fe811e2403d5ef5edc943dd

Kurento/doc-kurento,SanMi86/doc-kurento,SanMi86/doc-kurento,Kurento/doc-kurento,SanMi86/doc-kurento,SanMi86/doc-kurento,Kurento/doc-kurento