Fix broken contributing link

Gerrit91 · Gerrit91 · commit b14557d8656e · 2020-08-26T15:47:16.000+02:00
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -1,3 +1,3 @@
 # Contributing
 
-Please check out the [contributing section](https://docs.metal-stack.io/dev/contributing/) in our [docs](https://docs.metal-stack.io/dev/).
+Please check out the [contributing section](https://docs.metal-stack.io/stable/development/contributing/) in our [docs](https://docs.metal-stack.io/).

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,3 @@`
`1`	`1`	`# Contributing`
`2`	`2`
`3`		`-Please check out the [contributing section](https://docs.metal-stack.io/dev/contributing/) in our [docs](https://docs.metal-stack.io/dev/).`
	`3`	`+Please check out the [contributing section](https://docs.metal-stack.io/stable/development/contributing/) in our [docs](https://docs.metal-stack.io/).`