Example 12 links update (#119)

Author: antonvorobets

examples/12_NormalDistributionMyth.ipynb

@@ -6,7 +6,11 @@
    "metadata": {},
    "source": [
     "# The Normal Distribution Myth\n",
-    "This is the accompanying code to The Normal Distribution Myth article available on SSRN: https://ssrn.com/abstract=5283255 "
+    "This is the accompanying code to The Normal Distribution Myth article available on SSRN: https://ssrn.com/abstract=5283255 \n",
+    "\n",
+    "You can watch a video walkthrough of this example and its article here: https://youtu.be/rrwC2zC7_jA\n",
+    "\n",
+    "For a high-level description of the results and perspectives, see this Substack article: https://antonvorobets.substack.com/p/normal-distribution-myth "
    ]
   },
   {
@@ -621,6 +625,14 @@
     "res2"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "0b2bc2b6",
+   "metadata": {},
+   "source": [
+    "# Normality tests for montly, quarterly, and yearly non-overlapping returs"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 10,
@@ -633,14 +645,6 @@
     "anderson_statistic = np.full((remainder_days, I, 3), np.nan)"
    ]
   },
-  {
-   "cell_type": "markdown",
-   "id": "0b2bc2b6",
-   "metadata": {},
-   "source": [
-    "# Normality tests for montly, quarterly, and yearly non-overlapping returs"
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": 11,