darp10-b: Make Fn+left/right act as Home/End

This is similar to some other laptops like chromebooks and lenovos
while strictly speaking redundant, it's convenient to have access to all
navigation buttons in the same corner

Author: phcoder

src/keyboard/system76/14in_83/keymap/darp10-b.c

@@ -22,7 +22,7 @@ LAYOUT(
     K_CAPS, K_A, K_S, K_D, K_F, K_G, K_H, K_J, K_K, K_L, K_SEMICOLON, K_QUOTE, K_ENTER,
     K_LEFT_SHIFT, K_Z, K_X, K_C, K_V, K_B, K_N, K_M, K_COMMA, K_PERIOD, K_SLASH, K_RIGHT_SHIFT,
     K_LEFT_CTRL, KT_FN, K_LEFT_SUPER, K_LEFT_ALT, K_SPACE, K_RIGHT_ALT, K_APP, K_PGUP, K_UP, K_PGDN,
-    K_LEFT, K_DOWN, K_RIGHT
+    K_HOME, K_DOWN, K_END
 )
 };
 // uncrustify:on