samples/3D/ModelViewer/models: Remove mixed case in model textures

[sdk] / samples / 3D / ModelViewer / models / house / tetto1.jpg

diff --git a/samples/3D/ModelViewer/models/house/Tetto1.jpg b/samples/3D/ModelViewer/models/house/tetto1.jpg
similarity index 100%
rename from samples/3D/ModelViewer/models/house/Tetto1.jpg
rename to samples/3D/ModelViewer/models/house/tetto1.jpg