typo fix in intro.

docs/report/033.ipynb

@@ -15,6 +15,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
+    "jupyter": {
+     "source_hidden": true
+    },
     "tags": [
      "3d",
      "kinematics",
@@ -27,7 +30,7 @@
     ":::{card} PWA101: Amplitude analysis with Python basics\n",
     "TR-033\n",
     "^^^\n",
-    "This document introduces amplitude analysis, and specifically the technique called Partial Wave Analysis (PWA), by demonstrating its application to a specific reaction channel and amplitude model. The tutorial uses basic Python programming and libraries (e.g. [`numpy`](https://numpy.org/doc/stable), [`scipy`](https://docs.scipy.org/doc/scipy), etc.) are used to illustrate the more fundamental steps of PWA in hadron physics.\n",
+    "This tutorial introduces amplitude analysis, and specifically the technique called Partial Wave Analysis (PWA), by demonstrating its application to a specific reaction channel and amplitude model. Basic Python programming and libraries (e.g. [`numpy`](https://numpy.org/doc/stable), [`scipy`](https://docs.scipy.org/doc/scipy), etc.) are used to illustrate the more fundamental steps of PWA in hadron physics.\n",
     "+++\n",
     "✅ [ComPWA/RUB-EP1-AG#93](https://github.com/ComPWA/RUB-EP1-AG/issues/93), [compwa.github.io#217](https://github.com/ComPWA/compwa.github.io/pull/217)\n",
     ":::\n",