Fix indexing in yield example

Author: cborac

book/manuals/intros/alpaca2/extras.ipynb

@@ -52,10 +52,11 @@
     "    print(\"There \", j)\n",
     "\n",
     "### OUTPUT\n",
-    "# Here 1\n",
-    "# There 2\n",
-    "# Here 2\n",
-    "# There 3\n",
+    "# Here  0\n",
+    "# There  1\n",
+    "# Here  1\n",
+    "# There  2\n",
+    "# Here  2\n",
     "# ...\n",
     "```\n",
     "\n",
@@ -72,13 +73,14 @@
     "    print(\"There \", j)\n",
     "\n",
     "### OUTPUT\n",
+    "# Here 0\n",
     "# Here 1\n",
     "# Here 2\n",
     "# Here ..\n",
+    "# There 0\n",
     "# There 1\n",
     "# There 2\n",
-    "# There 3\n",
-    "# ...\n",
+    "# There ...\n",
     "```\n",
     "\n",
     "As you can see the main difference is with `yield` the function doesn't stop it continues. Where as returning needs the whole function the be finished.\n",