docs(ngAnimate): Improve Staggering config for animations

[pablotarga]

After console.log the output from the computeCachedCssStaggerStyles function I realized that I need set animation-duration to 0s and animation-delay on my stagger class as I am using animations instead of transitions.

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[pablotarga]

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[Narretz]

Just white-space changes

[Narretz]

Please remove the trailing whitespace in this line

[Narretz]

Please remove the trailing whitespace in this line