doc: add RafaelGSS as performance strategic lead

doc: add RafaelGSS as performance strategic lead · nodejs/node@dd5f835

Original file line number	Diff line number	Diff line change
`@@ -14,7 +14,7 @@ agenda to ensure they are active and have the support they need.`
`14`	`14`	`\| V8 Currency \| [Michaël Zasso][targos] \| \|`
`15`	`15`	`\| Next-10 \| [Michael Dawson][mhdawson] \| <https://github.com/nodejs/next-10> \|`
`16`	`16`	`\| Single executable apps \| [Darshan Sen][RaisinTen] \| <https://github.com/nodejs/single-executable> \|`
`17`		`-\| Performance \| \| <https://github.com/nodejs/performance> \|`
	`17`	`+\| Performance \| [Rafael Gonzaga][RafaelGSS] \| <https://github.com/nodejs/performance> \|`
`18`	`18`	`\| Primordials \| [Benjamin Gruenbaum][benjamingr] \| <https://github.com/nodejs/primordials-use-cases> \|`
`19`	`19`
`20`	`20`	`<details>`
`@@ -39,6 +39,7 @@ agenda to ensure they are active and have the support they need.`
`39`	`39`
`40`	`40`	`</details>`
`41`	`41`
	`42`	`+[RafaelGSS]: https://github.com/RafaelGSS`
`42`	`43`	`[RaisinTen]: https://github.com/RaisinTen`
`43`	`44`	`[benjamingr]: https://github.com/benjamingr`
`44`	`45`	`[jasnell]: https://github.com/jasnell`