Fix autoreload

#21

Author: yegortokmakov

Exercise7/exercise7.ipynb

@@ -52,7 +52,7 @@
     "# library written for this exercise providing additional functions for assignment submission, and others\n",
     "import utils\n",
     "\n",
-    "%load_ext autoreload \n",
+    "%load_ext autoreload\n",
     "%autoreload 2\n",
     "\n",
     "# define the submission/grader object for this exercise\n",