Update content/hardware/02.hero/boards/uno-r4-wifi/tutorials/dac/dac.md

Co-authored-by: Karl Söderby <35461661+karlsoderby@users.noreply.github.com>

Author: jacobhylen

content/hardware/02.hero/boards/uno-r4-wifi/tutorials/dac/dac.md

@@ -2,7 +2,8 @@
 title: "Arduino UNO R4 WiFi Digital-to-Analog Converter (DAC)
 description: "Learn how create waveforms and output them on a piezo, using the DAC on the UNO R4 WiFi board."
 tags:
-  - Guide
+  - Waveform Generation
+  - Analog
   - DAC
 author: 'Jacob Hylén'
 hardware: