Apply suggestions from code review

Suggestion from Taddy's review added

Co-authored-by: TaddyHC <94547080+TaddyHC@users.noreply.github.com>

Author: jcarolinares

content/hardware/05.pro-solutions/solutions-and-kits/portenta-machine-control/tutorials/pmc-opta-temp-ctrl/content.md

@@ -43,7 +43,7 @@ The system will send the temperature values from the Portenta Machine Control to
 ### Hardware Requirements
 
 - [Portenta Machine Control](https://store.arduino.cc/products/arduino-portenta-machine-control) (x1)
-- Opta™ with RS-485: [Opta™ RS485](https://store.arduino.cc/products/opta-rs485), or [Opta™ WiFi](https://store.arduino.cc/products/opta-wifi) (x1)
+Opta™ PLC with RS-485 support: [Opta™ RS485](https://store.arduino.cc/products/opta-rs485), or [Opta™ WiFi](https://store.arduino.cc/products/opta-wifi) (x1)
 - [Micro-USB cable](https://store.arduino.cc/products/usb-cable-type-a-male-to-micro-type-b-male) (x1)
 - [USB-C® cable](https://store.arduino.cc/products/usb-cable2in1-type-c) (x1)
 - PT100 RTD (x1)

content/hardware/07.opta/opta-family/opta/tutorials/03.getting-started-with-modbus-rtu/content.md

@@ -37,7 +37,7 @@ The Modbus RTU protocol is one of the protocols available within Opta™. In thi
 ### Hardware Requirements
 
 - Opta™ PLC with RS-485 support: [Opta™ RS485](https://store.arduino.cc/products/opta-rs485), or [Opta™ WiFi](https://store.arduino.cc/products/opta-wifi) (x2)
-- 12 VDC/1 A DIN rail power supply (x1)
+- 12 VDC / 1 A DIN rail power supply (x1)
 - [USB-C® cable](https://store.arduino.cc/products/usb-cable2in1-type-c) (x1)
 - Wire with either specification for RS-485 connection (x3)
 - STP/UTP 24-18AWG (Unterminated) 100-130 Ω rated

content/hardware/07.opta/opta-family/opta/tutorials/15.home-automation-application-note/content.md

@@ -41,12 +41,14 @@ This application note shows a home automation system based on an Opta™️, cap
 
 - [Opta™️ PLC with wireless connectivity support](https://store.arduino.cc/products/opta-wifi) (x1)
 - [USB-C® cable](https://store.arduino.cc/products/usb-cable2in1-type-c) (x1)
-- 12 V/30 RPM DC motor (x1)
+- 12 V / 30 RPM DC motor (x1)
+
 - Full-bridge motor driver (x1)
 - A 3D printed case for the DC motor and its driver (.stl files of the case can be downloaded here)
 - Normally Open (NO) Single Pole Double Throw (SPDT) limit switch (x2)
 - 24AWG twisted-pair cable (for electrical connections)
-- 12 V/2 A DC power supply (x1)
+- 12 V / 2 A DC power supply (x1)
+
 
 ### Software Requirements