tutorial: align the header in opensnoop (iovisor#2105)

detailyang · yonghong-song · commit 75836ef2b8c7 · 2019-01-03T08:36:27.000-08:00
align the header in opensnoop in the tutorial.
diff --git a/docs/tutorial.md b/docs/tutorial.md
@@ -63,7 +63,7 @@ More [examples](../tools/execsnoop_example.txt).
 
 ```
 # ./opensnoop
-PID    COMM      FD ERR PATH
+PID    COMM               FD ERR PATH
 1565   redis-server        5   0 /proc/1565/stat
 1565   redis-server        5   0 /proc/1565/stat
 1565   redis-server        5   0 /proc/1565/stat
