Make disclaimer that this only includes FASTQ more prominent

[samanthachui]

Make the text "These include primary datasets (fastq and metadata). Additional analysis (alignment and quantification) produced from a standardized analysis pipeline will be made available this summer." more prominent either by font or placement or both. It's a common misconception that the preview release will include expression matrices.

@happyimadesignr to think about how to update this.

[MillenniumFalconMechanic]

@happyimadesignr, I can make the updates once you have settled on a design.