Update library.properties (remove html link)

Co-authored-by: per1234 <accounts@perglass.com>

Author: leonardocavagnis

library.properties

@@ -3,7 +3,7 @@ version=1.1.1
 author=Arduino
 maintainer=Arduino <info@arduino.cc>
 sentence=DEPRECATED. Arduino Library for Portenta Machine Control - PMC
-paragraph=This library is no longer actively maintained and is deprecated. Consider migrating to <a href="https://github.com/arduino-libraries/Arduino_PortentaMachineControl">Arduino_PortentaMachineControl</a> library.
+paragraph=This library is no longer actively maintained and is deprecated. Consider migrating to the Arduino_PortentaMachineControl library.
 category=Communication
 url=https://github.com/arduino-libraries/Arduino_MachineControl
 architectures=mbed, mbed_portenta