chore: correct the contributor link in CONTRIBUTING.md (vuejs#6621)

ulivz · hefeng · commit 8f32b36c3277 · 2019-01-25T17:42:04.000+08:00
diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
@@ -138,4 +138,4 @@ Funds donated via Patreon goes directly to support Evan You's full-time work on
 
 Thank you to all the people who have already contributed to vuejs!
 
-<a href="graphs/contributors"><img src="https://opencollective.com/vuejs/contributors.svg?width=890" /></a>
+<a href="https://github.com/vuejs/vue/graphs/contributors"><img src="https://opencollective.com/vuejs/contributors.svg?width=890" /></a>

Original file line number	Diff line number	Diff line change
`@@ -138,4 +138,4 @@ Funds donated via Patreon goes directly to support Evan You's full-time work on`
`138`	`138`
`139`	`139`	`Thank you to all the people who have already contributed to vuejs!`
`140`	`140`
`141`		`-<a href="graphs/contributors"><img src="https://opencollective.com/vuejs/contributors.svg?width=890" /></a>`
	`141`	`+<a href="https://github.com/vuejs/vue/graphs/contributors"><img src="https://opencollective.com/vuejs/contributors.svg?width=890" /></a>`