🔧 Check renamed LIN_ADVANCE_K (MarlinFirmware#25710)

Author: thisiskeithb

Marlin/src/inc/SanityCheck.h

@@ -652,6 +652,8 @@
   #error "USE_M73_REMAINING_TIME is now SET_REMAINING_TIME."
 #elif defined(SHOW_SD_PERCENT)
   #error "SHOW_SD_PERCENT is now SHOW_PROGRESS_PERCENT."
+#elif defined(LIN_ADVANCE_K)
+  #error "LIN_ADVANCE_K is now ADVANCE_K."
 #elif defined(EXTRA_LIN_ADVANCE_K)
   #error "EXTRA_LIN_ADVANCE_K is now ADVANCE_K_EXTRA."
 #elif defined(POLAR_SEGMENTS_PER_SECOND) || defined(DELTA_SEGMENTS_PER_SECOND)  || defined(SCARA_SEGMENTS_PER_SECOND) || defined(TPARA_SEGMENTS_PER_SECOND)