add vertical space between exercises and examples
add vertical space between exercises and examples

katalysteducation/webview,carolinelane10/webview,Connexions/webview,Connexions/webview,katalysteducation/webview,katalysteducation/webview,dak/webview,dak/webview,katalysteducation/webview,dak/webview,Connexions/webview,Connexions/webview