docs: sync intro/teaser text from docs to readme

9 jobs for fix_readme in 8 minutes and 2 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Build Docker
passed build_docker_from_cache #725626

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  Test
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passed test_serial #725627

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  Demo Runs
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passed run_curve_fitting #725634

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passed run_getting_started_1 #725630

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passed run_getting_started_2 #725631

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passed run_getting_started_3 #725632

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passed run_ipynb #725629

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