Update Matplotlib_walkthrough.ipynb

typo

notebooks/Matplotlib_walkthrough.ipynb

@@ -464,7 +464,7 @@
     " - ``constrained_layout``: Automatically adjusts subplots and decorations such as legends and colour bars to fit optimally into the figure window, while preserving as far as possible the logical layout requested by the user. Bool, the default is false.\n",
     "\n",
     " > 👉 To control the resolution of the figure in pixels or centimeters, you need to play with the ``figsize`` and ``dpi`` parameters at the same time. For more details, see  \n",
-    " https://matplotlib.org/stable/gallery/subplots_axes_and_figures/figure_size_units.html#\n",
+    " > https://matplotlib.org/stable/gallery/subplots_axes_and_figures/figure_size_units.html#\n",
     "\n",
     "For complex layouts, Matplotlib offers several options, but one of the simplest and, sadly, underused is the ``plt.subplot_mosaic()`` function, which works as follows"
    ]