Mention that segments interpolate more

Marlin/example_configurations/TinyBoy2/Configuration.h

@@ -945,7 +945,8 @@
   #define ENABLE_LEVELING_FADE_HEIGHT
 
   // For Cartesian machines, instead of dividing moves on mesh boundaries,
-  // split up moves into short segments like a Delta.
+  // split up moves into short segments like a Delta. This follows the
+  // contours of the bed more closely than edge-to-edge straight moves.
   #define SEGMENT_LEVELED_MOVES
   #define LEVELED_SEGMENT_LENGTH 5.0 // (mm) Length of all segments (except the last one)