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

@@ -29,7 +29,7 @@ For example when dimming an LED, you can freely use a PWM enabled digital pin as
 
 However this will not always be the case, and for many uses you will need to use a genuine analog output to get your desired results. One such case is in audio purposes, where a PWM output simply will not give the same quality of sound as a genuine analog output, and requires some fiddling to work in the first place.
 
-## Hardware and Software needed
+## Hardware & Software Needed
   To follow along with this article, you will need the following hardware: 
 
   - Arduino UNO R4 Minima or Arduino UNO R4 WiFi