Improve tick label rotation method

Using ax.set_xticks(rotation=90) without passing labels is discouraged
by the documentation. It recommends ax.tick_params(axis='x', rotation=90)
instead.

Author: StefRe

cheatsheets.tex

@@ -977,7 +977,7 @@
     \textbf{… remove tick labels ?}\\
     \hspace*{2.5mm}~$\rightarrow$ ax.set\_[xy]ticklabels([])\\
     \textbf{… rotate tick labels ?}\\
-    \hspace*{2.5mm}~$\rightarrow$ ax.set\_[xy]ticks(rotation=90)\\
+    \hspace*{2.5mm}~$\rightarrow$ ax.tick\_params(axis="x", rotation=90)\\
     \textbf{… hide top spine?}\\
     \hspace*{2.5mm}~$\rightarrow$ ax.spines['top'].set\_visible(False)\\
     \textbf{… hide legend border?}\\