DFT tutorial prep for WS22/23

Author: fs446

dft/dft_windowing_tutorial/dft_windowing_tutorial.pdf

@@ -85,7 +85,7 @@
 Discrete-Time Signals} with the github URL.
 \newline
 
-\textbf{Digital Signal Processing Tutorial 1 \& 2, Winter Semester 2020/21}
+\textbf{Digital Signal Processing Tutorial 1 \& 2, Winter Semester 2022/23}
 (Course \#24505)\\
 authors: Frank Schultz (concept, initial draft, OER version),
 Vera Erbes (proof read, validation, translation from German to English), https://github.com/robhau