added a css fix for the image bug issue

Docker-DCO-1.1-Signed-off-by: Nathan Hsieh <hsieh.nathan@gmail.com>
(github: nhsiehgit)

docs/theme/mkdocs/css/docs.css

@@ -326,3 +326,6 @@ ol li {
 .navbar #usernav .nav li {
   padding-top: 0px !important;
 }
+table.table tr td img {
+    width:100%;
+}