Extend existing MESH_BED_LEVELING test

Marlin/SanityCheck.h

 #endif
 
 /**
- * Manual Bed Leveling
+ * Mesh Bed Leveling
  */
-#if ENABLED(MANUAL_BED_LEVELING)
-  #if DISABLED(MESH_BED_LEVELING)
-    #error MESH_BED_LEVELING is required for MANUAL_BED_LEVELING.
-  #endif
-#endif
 
 #if ENABLED(MESH_BED_LEVELING)
   #if ENABLED(DELTA)
   #if MESH_NUM_X_POINTS > 7 || MESH_NUM_Y_POINTS > 7
     #error MESH_NUM_X_POINTS and MESH_NUM_Y_POINTS need to be less than 8.
   #endif
+#elif ENABLED(MANUAL_BED_LEVELING)
+  #error MESH_BED_LEVELING is required for MANUAL_BED_LEVELING.
 #endif
 
 /**