The word `environmental` is misspelled as `envioronmental`

[eecavanna]

The typo is in this blurb:

docs/content/home/src/howto_guides/portal_guide.md

Lines 179 to 183 in 20f9d04

	Similarly, ENVO, PO and Uberon terms are classification systems that can be used to
	describe environments where samples were collected from which can be used to query the portal.
	Users can search by broad-scale environmental context, local environmental context,
	and envioronmental medium. These terms are required by NMDC because they are required by
	the GSC.

This misspelling was reported by a spellchecker (under construction) in the docs repo.