doc: another fix to "info pic"

Something that commit 254316fa1f ("intc: make HMP 'info irq' and 'info
pic' commands available on all targets", 2016-10-04) forgot to touch up.

Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20171229073104.3810-2-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hmp-commands-info.hx

@@ -201,7 +201,7 @@ ETEXI
 STEXI
 @item info pic
 @findex info pic
-Show i8259 (PIC) state.
+Show PIC state.
 ETEXI
 
     {