lib/dstat: Fix a comment

Apparently this file was copied from lib/apache.

Change-Id: Ie89d423ca225c697122820a1d9e859769aea9f86
diff --git a/lib/dstat b/lib/dstat
index a2c522c..a6990bb 100644
--- a/lib/dstat
+++ b/lib/dstat
@@ -1,4 +1,4 @@
-# lib/apache
+# lib/dstat
 # Functions to start and stop dstat
 
 # Dependencies: