[gnome-usage] README: Improve more wording

[Gitlab System User <gitlab src gnome org>]

commit 03614387224cc9580e11540593bc82e5ee9f4cbe
Author: Carlos Soriano <csoriano1618 gmail com>
Date:   Wed Sep 27 14:36:31 2017 +0000

    README: Improve more wording

 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/README.md b/README.md
index 06dfd20..6c02c61 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 A nice way to view information about use of system resources, like memory and disk space.
 
-## Actual TODO:
+## TODO
 - [x] Processor Usage
 - [x] Memory usage
 - [x] Network usage