Merge pull request dibgerge#56 from warnak/patch-1

possible typo fix

Author: dibgerge

Exercise1/exercise1.ipynb

@@ -508,7 +508,7 @@
     "    X : array_like\n",
     "        The input dataset of shape (m x n+1).\n",
     "    \n",
-    "    y : arra_like\n",
+    "    y : array_like\n",
     "        Value at given features. A vector of shape (m, ).\n",
     "    \n",
     "    theta : array_like\n",