Fix error in website update instructions

Fix a cp command in the website update how-to.

Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Change-Id: I77acd4940b843530ef6ba63b621eebfab6bcc7ab
diff --git a/README.md b/README.md
index 645492e..e563de4 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,7 @@
 git clone http://github.com/google/kunit-docs.git
 cd kunit-docs/
 git ls-files -z | xargs -0 rm -f
-cp -r ../kunit-website/_build/html/* ./
+cp -r ../kunit-website/_build/html/. ./
 git add -A
 git commit
 git push -u origin