Rename files

launch/sample/spawn_road.launch

 <?xml version="1.0" encoding="UTF-8"?>
 <launch>
   <arg name="road_name"  default="road"/>
-  <arg name="road_file"  default="example"/>
+  <arg name="road_file"  default="sample"/>
   <arg name="road_size"  default="9.9101"/>
   <arg name="road_path"  default="$(find iri_adc_circuit_example)/data"/>
   <arg name="x"          default="3.5"/>

map/sample.yaml

 image: sample.pgm
-resolution: 0.020000
+resolution: 0.050000
 origin: [-5.000000, -5.000000, 0.000000]
 negate: 0
 occupied_thresh: 0.65

map/sample005.yaml

-image: sample005.pgm
-resolution: 0.050000
-origin: [-5.000000, -5.000000, 0.000000]
-negate: 0
-occupied_thresh: 0.65
-free_thresh: 0.196
-