node-api: reword "implementation in an alternative VM" as implementable

node-api: reword "implementation in an alternative VM" as implementable · nodejs/node@1e37eab

Original file line number	Diff line number	Diff line change
`@@ -37,7 +37,7 @@ please follow these principles and guidelines:`
`37`	`37`
`38`	`38`	`2. Review and approval`
`39`	`39`	`* A new API addition must be signed off by at least two Node-API team members.`
`40`		`-* Should be implemented in at least one other VM implementation of Node.js.`
	`40`	`+* Should be implemented in terms of available VM APIs in at least one other VM implementation of Node.js.`
`41`	`41`
`42`	`42`	`3. Experimental phase`
`43`	`43`	`* New APIs must be marked as experimental for at least one minor Node.js release before promotion.`
`@@ -49,4 +49,4 @@ please follow these principles and guidelines:`
`49`	`49`	`* Approval by the Node-API team.`
`50`	`50`	`* Availability of a down-level implementation if backporting is needed.`
`51`	`51`	`* Usage by a published real-world module.`
`52`		`-* Implementation in an alternative VM.`
	`52`	`+* Implementable in an alternative VM.`