Fix broken link

cheatsheets.tex

@@ -1019,7 +1019,7 @@
     \href{https://yt-project.org/doc/index.html}{\textbf{yt}}: Volumetric data visualization\\
     \href{https://mpld3.github.io}{\textbf{mpld3}}: Bringing Matplotlib to the browser\\
     \href{https://datashader.org/}{\textbf{Datashader}}: Large data processing pipeline\\
-    \href{https://plotnine.readthedocs.io/en/latest/}{\textbf{plotnine}}: A grammar of graphics for Python
+    \href{https://plotnine.org/}{\textbf{plotnine}}: A grammar of graphics for Python
   \end{myboxed}
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   \begin{center}