PM / Documentation: Fix minor issue in freezing_of_tasks.txt
PM / Documentation: Fix minor issue in freezing_of_tasks.txt

In a paragraph, "kernel thread" is mistakenly written as "kernel". Fix this by
adding thread after word "kernel".

Changes are shown in multiple lines, as they are realigned to 80 col width.

Signed-off-by: Viresh Kumar <5ff32272b3d9f86512eddc8e0af523fc6f7924e5@st.com>
Acked-by: Pavel Machek <2375fa63e2908bb2df59f606483a3aa92321db7a@ucw.cz>
Signed-off-by: Rafael J. Wysocki <a11f87183a953ab11f50fbafff689c5a7fa3506c@sisk.pl>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs