Minor edits to intro to regional assessments

Edited some of the text
Merge branch 'master' of https://github.com/OHI-Science/ohimanual

Conflicts:
tutorials/intro_regional_assessment.md
tutorials/ohi-manual.docx
tutorials/ohi-manual.md
Merge branch 'master' of https://github.com/OHI-Science/ohimanual

Conflicts:
	tutorials/intro_regional_assessment.md
	tutorials/ohi-manual.docx
	tutorials/ohi-manual.md