docs: fixed broken plugin dev link on contributing guide (#1510)

Payton Burdette · yyx990803 · commit 252fa363c3e3 · 2018-06-07T23:22:27.000-04:00
diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
@@ -52,4 +52,4 @@ Note that `jest --onlyChanged` isn't always accurate because some tests spawn ch
 
 ### Plugin Development
 
-See [dedicated section in docs](https://github.com/vuejs/vue-cli/tree/dev/docs/plugin-dev.md).
+See [dedicated section in docs](https://github.com/vuejs/vue-cli/blob/dev/docs/dev-guide/plugin-dev.md).

Original file line number	Diff line number	Diff line change
@@ -52,4 +52,4 @@ Note that `jest --onlyChanged` isn't always accurate because some tests spawn ch
`52`	`52`
`53`	`53`	`### Plugin Development`
`54`	`54`
`55`		`-See [dedicated section in docs](https://github.com/vuejs/vue-cli/tree/dev/docs/plugin-dev.md).`
	`55`	`+See [dedicated section in docs](https://github.com/vuejs/vue-cli/blob/dev/docs/dev-guide/plugin-dev.md).`