replace purview with scope

DECISION-MAKING.md

@@ -24,18 +24,18 @@ BIDS governance.
 
 **Maintainers Group**
 
-| Name                                                                           | Time commitment | Purview               |
+| Name                                                                           | Time commitment | Scope                 |
 |--------------------------------------------------------------------------------|-----------------|-----------------------|
 | Stefan Appelhoff ([@sappelhoff](https://github.com/sappelhoff))                | 5h/week         |                       |
 | Chris Markiewicz ([@effigies](https://github.com/effigies))                    | 5h/week         |                       |
 | Franklin Feingold ([@franklin-feingold](https://github.com/franklin-feingold)) | 5h/week         | Community development | 
 
 In addition to the [BIDS Governance](https://bids.neuroimaging.io/governance.html#bids-maintainers-group)
-classification of a maintainer, maintainers may declare a limited scope or purview of responsibility.
-Such a purview can range from maintaining a modality supported in the specification to nurturing a
+classification of a maintainer, maintainers may declare a limited scope of responsibility.
+Such a scope can range from maintaining a modality supported in the specification to nurturing a
 welcoming BIDS community. 
-One or more purviews can be chosen by the maintainer and agreed upon by the Maintainers Group.
-A maintainer is primarily responsible for issues within their chosen purview(s), although
+One or more scopes can be chosen by the maintainer and agreed upon by the Maintainers Group.
+A maintainer is primarily responsible for issues within their chosen scope(s), although
 contributions elsewhere are welcome, as well.
 
 **BEP Leads Group**