[michaelmckinsey1]

Description

• Remove red underline in spec figures @slabasan it would be good when you get the chance to regenerate these, as you have the source. I just post-processed removed the lines. see docs/_static/images/fluxtainer-aws-experiment-spec-clang.png for an example
• add benchpark system and experiment slide examples to search benchpark page
• minor content adjustments
• Add note at top of pages 4 and 5 that the user has already ran certain steps
• make spec figure sizes uniform
• Add extra search-benchpark example for benchpark info --query
• migrate spec content from start here page to respective spack/benchpark pages

I validated all of these changes by building the docs locally, and running locally in fluxtainer.