Fix missing newlines when formatting python3

[tanelpoder]

Currently python3 gives this (python2 has some newlines for readability):

$ sudo psn -r -p 111525 -a -G syscall,wchan
Linux Process Snapper v1.1.0 by Tanel Poder [https://0x.tools]
Sampling /proc/stat, syscall, wchan for 5 seconds...
finished.
=== Active Threads ===========================================================================
 samples | avg_threads | comm   | state                 | syscall         | wchan             
----------------------------------------------------------------------------------------------
     100 |        1.00 | (perl) | (zombie)              | [kernel_thread] | 0                 
     100 |        1.00 | (perl) | Sleep (Interruptible) | nanosleep       | hrtimer_nanosleep 
samples: 100
(expected: 100)
total processes: 2, threads: 2
runtime: 5.00, measure time: 0.13

Python2:

$ sudo psn -r -p 111525 -a -G syscall,wchan

Linux Process Snapper v1.1.0 by Tanel Poder [https://0x.tools]
Sampling /proc/stat, syscall, wchan for 5 seconds... finished.


=== Active Threads ===========================================================================

 samples | avg_threads | comm   | state                 | syscall         | wchan             
----------------------------------------------------------------------------------------------
     100 |        1.00 | (perl) | (zombie)              | [kernel_thread] | 0                 
     100 |        1.00 | (perl) | Sleep (Interruptible) | nanosleep       | hrtimer_nanosleep 


samples: 100 (expected: 100)
total processes: 2, threads: 2
runtime: 5.00, measure time: 0.13