📝 Apply M592 changes

MarlinFirmware/Marlin#27162

_gcode/M592.md

@@ -14,14 +14,14 @@ parameters:
 
 - tag: A
   optional: true
-  description: Set the Linear coefficient (Default 0.0)
+  description: Set the Quadratic coefficient (Default 0.0)
   values:
   - type: float
     tag: coeff
 
 - tag: B
   optional: true
-  description: Set the Quadratic coefficient (Default 0.0)
+  description: Set the Linear coefficient (Default 0.0)
   values:
   - type: float
     tag: coeff
@@ -38,6 +38,6 @@ example:
   code: M592 A0.2 B0.3
 
 ---
-Get or set nonlinear extrusion parameters.
+Get or set Nonlinear Extrusion parameters.
 
-Nonlinear Extrusion adjusts the amount of extrusion based on the instantaneous velocity of extrusion, as a multiplier. The amount of extrusion is multiplied by `max(C, C + A*v + B*v^2)` where `v` is extruder velocity in mm/s. Only adjusts forward extrusions, since those are the ones affected by backpressure.
+_Nonlinear Extrusion_ adjusts the amount of extrusion based on the instantaneous velocity of extrusion, as a multiplier. The amount of extrusion is multiplied by `max(C, A*v^2 + B*v + C)` where `v` is extruder velocity in mm/s. Only adjusts forward extrusions, since those are the ones affected by back-pressure.