update vbat sag compensation link (#4279)

Author: nerdCopter

locales/en/messages.json

@@ -4551,7 +4551,7 @@
         "message": "Vbat Sag Compensation"
     },
     "pidTuningVbatSagCompensationHelp": {
-        "message": "Gives consistent throttle and PID performance over the usable battery voltage range by increasing motor output as battery voltage falls.<br /><br />The amount of compensation can be varied between 0 and 100%. Full compensation (100%) is recommended.<br /><br />Visit <a href=\"https://betaflight.com/docs/tuning/4.2-Tuning-Notes#dynamic-battery-sag-compensation\" target=\"_blank\" rel=\"noopener noreferrer\">this wiki entry</a> for more info."
+        "message": "Gives consistent throttle and PID performance over the usable battery voltage range by increasing motor output as battery voltage falls.<br /><br />The amount of compensation can be varied between 0 and 100%. Full compensation (100%) is recommended.<br /><br />Visit <a href=\"https://betaflight.com/docs/wiki/tuning/4-2-tuning-notes#dynamic-battery-sag-compensation\" target=\"_blank\" rel=\"noopener noreferrer\">this wiki entry</a> for more info."
     },
     "pidTuningVbatSagValue": {
         "message": "%"