Apply suggestions from code review

Co-authored-by: Gaia Castronovo <[email protected]>

Author: jhansson-ard

content/hardware/08.edu/solution-and-kits/din-celsius/datasheet/datasheet.md

@@ -15,7 +15,7 @@ The Arduino® DIN Celsius offers you a mini temperature laboratory to test your
 Pro, PLC projects, Education, Industry Ready, Building automation
 
 # Features
-**Note**: This board needs the Arduino Opta® WiFi for full functionality.
+**Note**: This board needs the Arduino Opta® for full functionality.
 
 - **Temperature sensor**
     - 1 TMP236, from -10 °C to 125 °C with an accuracy of +/- 2.5 °C

content/hardware/08.edu/solution-and-kits/din-simul8/datasheet/datasheet.md

@@ -14,7 +14,7 @@ Arduino® DIN Simul8 is a digital-input-simulator and power distribution board f
 Pro, PLC projects, Education, Industry Ready, Building automation
 
 # Features
-**Note**: This board needs the Arduino Opta® WiFi for full functionality.
+**Note**: This board needs the Arduino Opta® for full functionality.
 
 - **Toggle Switches**
     - 8 toggle switch in the middle of the board