fix: fix formatting for RTD in Non-Rotationally Symmetric Systems tutorial

Author: HarrisonKramer

docs/examples/Tutorial_1e_Non_Rotationally_Symmetric_Systems.ipynb

@@ -11,9 +11,11 @@
     "The following topics will be covered:\n",
     "\n",
     "1. Surface Coordinate System in Optiland.\n",
-    "2. Folded Mirror System Design in Optiland - Approach 1 (more intuitive). <br>\n",
-    "&emsp;2.1 Simple RMS Spot Optimization.\n",
-    "3. Folded Mirror System Design in Optiland - Approach 2 (less intuitive). <br>\n"
+    "2. Folded Mirror System Design in Optiland - Approach 1 (more intuitive)\n",
+    "\n",
+    "    2.1 Simple RMS Spot Optimization.\n",
+    "\n",
+    "3. Folded Mirror System Design in Optiland - Approach 2 (less intuitive).\n"
    ]
   },
   {