[fr3] Fix indentation issues in README.

PiperOrigin-RevId: 639122520
Change-Id: I3f6a1317e2dbf383dd66b1b6f77d2a1174a01118

franka_fr3/README.md

@@ -1,6 +1,7 @@
 # Franka Robotics FR3 Description (MJCF)
 
-Requires MuJoCo 3.1.3 or later.
+> [!IMPORTANT]
+> Requires MuJoCo 3.1.3 or later.
 
 ## Overview
 
@@ -13,10 +14,10 @@ This package contains a simplified robot description (MJCF) of the [Franka Resea
 ## URDF → MJCF derivation steps
 
 1. Ran the URDF generation [script](https://github.com/frankaemika/franka_description/blob/main/scripts/create_urdf.sh) in [franka_description](https://github.com/frankaemika/franka_description).
-  * Command used: `./scripts/create_urdf.sh fr3`
+    * Command used: `./scripts/create_urdf.sh fr3`
 2. Converted the DAE visual meshes to OBJ using [Blender](https://www.blender.org/).
-  * Removed license headers in the DAE files to properly load in Blender.
-  * When exporting, ensure "up axis" is +Z, and "forward axis" is +Y.
+    * Removed license headers in the DAE files to properly load in Blender.
+    * When exporting, ensure "up axis" is +Z, and "forward axis" is +Y.
 3. Processed OBJ files with [`obj2mjcf`](https://github.com/kevinzakka/obj2mjcf).
 4. Added `<mujoco> <compiler discardvisual="true" strippath="false" fusestatic="false" balanceinertia="true"/> </mujoco>` to the URDF's `<robot>` clause.
 5. Loaded the URDF into MuJoCo and saved a corresponding MJCF.

franka_fr3/fr3.xml

@@ -21,8 +21,8 @@
     <material name="black" rgba=".2 .2 .2 1"/>
     <material name="white" rgba="1 1 1 1"/>
     <material name="red" rgba="1 0.072272 0.039546 1"/>
-    <material name="green" rgba="0.102241 0.571125 0.102242 1"/>
     <material name="gray" rgba="0.863156 0.863156 0.863157 1"/>
+    <material name="button_green" rgba="0.102241 0.571125 0.102242 1"/>
     <material name="button_red" rgba="0.520996 0.008023 0.013702 1"/>
     <material name="button_blue" rgba="0.024157 0.445201 0.737911 1"/>
 
@@ -114,7 +114,7 @@
                     <inertial pos="0.0597131 -0.0410295 -0.0101693" quat="0.593933 0.525442 0.520644 0.316361"
                       mass="1.81704" diaginertia="0.00483538 0.00483538 0.00483538"/>
                     <joint name="fr3_joint6" axis="0 0 1" range="0.5445 4.5169" actuatorfrcrange="-12 12"/>
-                    <geom mesh="link6_0" material="green" class="visual"/>
+                    <geom mesh="link6_0" material="button_green" class="visual"/>
                     <geom mesh="link6_1" material="white" class="visual"/>
                     <geom mesh="link6_2" material="white" class="visual"/>
                     <geom mesh="link6_3" material="gray" class="visual"/>