make corporate pricing more visible

[ErinBecker]

Moves text describing for-profit pricing structure from paragraph body to table note. This PR makes this change for the following pages:

• [x] /membership/
• [x] /workshops/
• [x] /become-instructor/
• [x] /lesson-development-training/

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[ErinBecker]

@maneesha - this is ready for review and merging at your convenience!

[maneesha]

Thanks @ErinBecker Note my review is only to verify the site builds correctly and assumes the content is corect.