Correct typo and expand printed descriptions

Author: timothyhull

Diff for: lab/xml_python_conversion.ipynb

@@ -123,7 +123,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "print('** \"item\" Python Object Type **')\n",
+    "print('** "items" XML tag Python Object Type **')\n",
     "print(type(py_data['root']['agenda']['items']))"
    ]
   },
@@ -141,7 +141,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "print('** \"item\" Python Object Type **')\n",
+    "print('** "item" XML tag Python Object Type **')\n",
     "print(type(py_data['root']['agenda']['items']['item']))"
    ]
   },