Increased minimum width of heating board 1

heating-boards/heating_board_1/heating_board_1/heating_board_1.kicad_prl

 {
   "board": {
-    "active_layer": 0,
+    "active_layer": 1,
     "active_layer_preset": "",
     "auto_track_width": true,
     "hidden_nets": [],
@@ -43,7 +43,6 @@
       15,
       16,
       17,
-      18,
       19,
       20,
       21,
@@ -60,9 +59,10 @@
       33,
       34,
       35,
-      36
+      36,
+      37
     ],
-    "visible_layers": "7ffffff_80000007",
+    "visible_layers": "003fffc_80000007",
     "zone_display_mode": 0
   },
   "meta": {