Update step_six.md (docker#1105)

snesneros · johndmulhausen · commit 581de75caa25 · 2017-01-12T19:13:36.000-08:00
diff --git a/engine/getstarted/step_six.md b/engine/getstarted/step_six.md
@@ -99,7 +99,7 @@ If you don't already have a terminal open, open one now:
 
 In this last section, you'll pull the image you just pushed to hub. Before you
 do that though, you'll need to remove the original image from your local
-machine. If you left the original image on your machine. Docker would not pull
+machine. If you left the original image on your machine, Docker would not pull
 from the hub &mdash; why would it? The two images are identical.
 
 1. Make sure Docker is running, and open a command line terminal.
@@ -193,4 +193,4 @@ You've done a lot, you've done all of the following fundamental Docker tasks.
 You've only scratched the surface of what Docker can do. Go to the next page to [learn more](last_page.md).
 
 
-&nbsp;
+&nbsp;
