Fix some comments

Marlin/Configuration.h

 //
 // - Allow Z homing only after X and Y homing AND stepper drivers still enabled.
 // - If stepper drivers time out, it will need X and Y homing again before Z homing.
-// - Move the Z probe (or nozzle) to a defined XY point before Z Homing when homing all axes (G28).
+// - Move the Z probe (or nozzle) to a defined XY point before Z Homing.
 // - Prevent Z homing when the Z probe is outside bed area.
 //
 //#define Z_SAFE_HOMING
 
 #if ENABLED(Z_SAFE_HOMING)
-  #define Z_SAFE_HOMING_X_POINT X_CENTER  // X point for Z homing when homing all axes (G28).
-  #define Z_SAFE_HOMING_Y_POINT Y_CENTER  // Y point for Z homing when homing all axes (G28).
+  #define Z_SAFE_HOMING_X_POINT X_CENTER  // X point for Z homing
+  #define Z_SAFE_HOMING_Y_POINT Y_CENTER  // Y point for Z homing
 #endif
 
 // Homing speeds (mm/m)

Marlin/Configuration_adv.h

 // @section temperature
 
 //===========================================================================
-//=============================Thermal Settings  ============================
+//============================= Thermal Settings ============================
 //===========================================================================
 
 /**