Add "Retired" type to "WiFi Link"

Author: per1234

registry.txt

@@ -102,7 +102,7 @@ https://github.com/arduino-org/arduino-library-lora-node-shield.git|Arduino|LoRa
 
 # to be moved in arduino-libraries
 https://github.com/cmaglie/FlashStorage.git|Contributed|FlashStorage
-https://github.com/arduino-org/arduino-library-wifilink.git|Arduino|WiFi Link
+https://github.com/arduino-org/arduino-library-wifilink.git|Arduino,Retired|WiFi Link
 
 https://github.com/arduinoverkstad/EducationShield.git|Contributed|EducationShield
 # REMOVED: https://github.com/arduinoverkstad/Svante-Workshop.git|Contributed|Svante