README: Reword cleaning the repo

Reworded cleaning the repo. The old wording did not make sense.

Change-Id: Ic61e8f2b77e0536e656faa7dc6da06e20b67dd68
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/README.md b/README.md
index dcd7626..5f6f68e 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@
     2. ./configure ${CONFIGURE_FLAGS}
     3. make
 
-To full clean the repository again run `./bootstrap.sh clean`.
+To clean the repository run `./bootstrap.sh clean`.
 ```
 
 ## Supported Commands