update assets credits

myosuite/envs/myo/assets/Assets.md

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+## Assets & Credits
+
+This project uses third-party 3D assets from Sketchfab.
+All assets are used under their respective licenses.
+
+---
+### Table Tennis
+- Author:  marvirab
+- Source: https://sketchfab.com/3d-models/pingpongtable-tennis-lowpoly-82615ac6f92d440ebacfc45387c56ef3
+- License: CC BY 4.0
+- Modifications: Conversion to OBJ, rescaling height, UV unwrapping and texture baking
+
+
+---
+### Soccer Field
+- Author:  Vertex
+- Source: https://sketchfab.com/3d-models/soccer-field-lowpoly-a9afa5381d2147d9a355cdd708b4b98d
+- License: CC BY 4.0
+- Modifications: Conversion to OBJ, rescaling, UV unwrapping and texture baking
+
+All rights belong to their respective creators.

myosuite/envs/myo/assets/leg_soccer/soccer_assets/soccer_scene/SoccerPitch_goal.mtl

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+# Blender 4.5.3 LTS MTL File: 'None'
+# www.blender.org
+
+newmtl Default.002
+Ns 0.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.800000 0.800000 0.800000
+Ks 0.000000 0.000000 0.000000
+Ke 0.000000 0.000000 0.000000
+Ni 1.500000
+d 1.000000
+illum 1