Small fixes to live notebook with forward model (#24)

- Remove indentation for LaTeX equation
- Fix cells for mesh creation

live/01-forward-dc-resisitivity-2d.ipynb

@@ -70,7 +70,8 @@
     "- Spans over -300m to 300m\n",
     "- Has a horizontal resolution of 1m\n",
     "- The synthetic elevations are generated with a function:\n",
-    "    $$ y(x) = 4 + 4 \\tanh \\left( \\frac{x}{100} \\right) $$"
+    "\n",
+    "$$ y(x) = 4 + 4 \\tanh \\left( \\frac{x}{100} \\right) $$"
    ]
   },
   {
@@ -186,7 +187,14 @@
     "\n",
     "# Shift top to maximum topography and center of survey line\n",
     "y_topo_max = np.max(topo_2d[:, -1])\n",
-    "mesh.origin = mesh.origin + np.r_[np.mean(end_locations), y_topo_max]"
+    "mesh.origin = mesh.origin + np.r_[0, y_topo_max]"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Once the tree mesh is initialized, we want to refine it close to the electrodes and around the topography"
    ]
   },
   {
@@ -240,62 +248,6 @@
     "plt.show()"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Once the tree mesh is initialized, we want to refine it close to the electrodes and around the topography"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "# Plot the mesh\n",
-    "fig = plt.figure(figsize=(8, 4))\n",
-    "\n",
-    "ax1 = fig.add_axes([0.14, 0.17, 0.8, 0.7])\n",
-    "mesh.plot_grid(ax=ax1, linewidth=1)\n",
-    "ax1.grid(False)\n",
-    "ax1.set_xlim(-200, 200)\n",
-    "ax1.set_ylim(np.max(y_topo) - 200, np.max(y_topo))\n",
-    "ax1.set_title(\"Mesh\")\n",
-    "ax1.set_xlabel(\"x (m)\")\n",
-    "ax1.set_ylabel(\"y (m)\")\n",
-    "\n",
-    "plt.show()"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {},