Merge pull request iovisor#4049 from Rtoax/patch-17-funcinterval.8-x

Remove executable permission for 'funcinterval.8'.

Author: davemarchevsky

man/man8/funcinterval.8

@@ -8,7 +8,7 @@ This tool times interval between the same function as a histogram.
 
 eBPF/bcc is very suitable for platform performance tuning.
 By funclatency, we can profile specific functions to know how latency
-this function costs. However, sometimes performance drop is not about the 
+this function costs. However, sometimes performance drop is not about the
 latency of function but the interval between function calls.
 funcinterval is born for this purpose.