Add OpenSSF Badge

Signed-off-by: John Mertic <[email protected]>

Author: jmertic

README.md

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 # DPEL Website Doc
 
+[![OpenSSF Best Practices](https://www.bestpractices.dev/projects/8737/badge)](https://www.bestpractices.dev/projects/8737)
+
 **DPEL: Digital Production Example Library**
 A library of digital assets - 3D scenes, digital cinema footage, etc. - that demonstrate the scale and complexity of modern feature film production, including computer graphics, visual effects and animation.