Add PAL Talos MJCF description from Menagerie.

[kevinzakka]

Thanks for everything @stephane-caron!

[coveralls]

Pull Request Test Coverage Report for Build 10950254000

Details

• 6 of 6 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.02%) to 97.39%

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Totals
Change from base Build 10774054015:	0.02%
Covered Lines:	933
Relevant Lines:	958

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💛 - Coveralls

[stephane-caron]

LGTM, thanks! :+1: