update README

Signed-off-by: Joel Fernandes <joel@joelfernandes.org>
diff --git a/README.md b/README.md
index a4b7d1a..cb1dc5c 100644
--- a/README.md
+++ b/README.md
@@ -60,8 +60,9 @@
 # Then run, for the base image:
 adeb prepare
 ```
-# The previous command only downloads and installs the base image.
-# Instead if you want to download and install the full image, do:
+The previous command only downloads and installs the base image.
+Instead if you want to download and install the full image, do:
+```
 adeb prepare --full
 ```