🐛 Spellcheck comments (#22496)

codespell -q 3 --builtin=clear,rare,informal,code -S ./Marlin/src/lcd/language -L alo,amin,endcode,stdio,uint

Marlin/Configuration_adv.h

@@ -3889,7 +3889,7 @@
    */
   #define I2CPE_MIN_UPD_TIME_MS     4                       // (ms) Minimum time between encoder checks.
 
-  // Use a rolling average to identify persistant errors that indicate skips, as opposed to vibration and noise.
+  // Use a rolling average to identify persistent errors that indicate skips, as opposed to vibration and noise.
   #define I2CPE_ERR_ROLLING_AVERAGE
 
 #endif // I2C_POSITION_ENCODERS