Copter: RTL config formatting fix

No functional change

ArduCopter/config.h

@@ -484,24 +484,24 @@
  # define RTL_ALT 				    1500    // default alt to return to home in cm, 0 = Maintain current altitude
 #endif
 
-#ifndef RTL_CONE_SLOPE
- # define RTL_CONE_SLOPE            3.0f   // slope of RTL cone. 0 = No cone
-#endif
-
 #ifndef RTL_ALT_MIN
  # define RTL_ALT_MIN               200     // min height above ground for RTL (i.e 2m)
 #endif
 
+#ifndef RTL_CLIMB_MIN_DEFAULT
+ # define RTL_CLIMB_MIN_DEFAULT     0       // vehicle will always climb this many cm as first stage of RTL
+#endif
+
 #ifndef RTL_ABS_MIN_CLIMB
- # define RTL_ABS_MIN_CLIMB          250     // absolute minimum initial climb
+ # define RTL_ABS_MIN_CLIMB         250     // absolute minimum initial climb
 #endif
 
-#ifndef RTL_MIN_CONE_SLOPE
- # define RTL_MIN_CONE_SLOPE          0.5f     // absolute minimum initial climb
+#ifndef RTL_CONE_SLOPE
+ # define RTL_CONE_SLOPE            3.0f    // slope of RTL cone (height / distance). 0 = No cone
 #endif
 
-#ifndef RTL_CLIMB_MIN_DEFAULT
- # define RTL_CLIMB_MIN_DEFAULT     0       // vehicle will always climb this many cm as first stage of RTL
+#ifndef RTL_MIN_CONE_SLOPE
+ # define RTL_MIN_CONE_SLOPE        0.5f    // minimum slope of cone
 #endif
 
 #ifndef RTL_LOITER_TIME