docs: Fix broken links on CONTRIBUTING.md (#2918)

* docs: Fix broken links on CONTRIBUTING.md

Signed-off-by: Gonçalo Montalvão Marques <9379664+gonmmarques@users.noreply.github.com>
---------

Signed-off-by: Gonçalo Montalvão Marques <9379664+gonmmarques@users.noreply.github.com>

CONTRIBUTING.md

@@ -652,7 +652,7 @@ When you realize that you may need to make a breaking change, discuss it with a
 Here are some examples of breaking changes:
 
 * The schema of porter.yaml changed.
-* The schema of Porter's [file formats](https://getporter.org/reference/file-formats) changed.
+* The schema of Porter's [file formats](https://getporter.org/references/file-formats) changed.
 * The schema of Porter's [config file](https://getporter.org/configuration/#config-file) changed.
 * Flags or behavior of a CLI command changed, such as removing a flag or adding a validation that can result in a hard error, preventing the command from running.
 
@@ -680,5 +680,5 @@ Our [version strategy] explains how we version the project, when you should expe
 breaking changes in a release, and the process for the v1 release.
 
 [cdn]: https://getporter.org/src/infra/cdn.md
-[version strategy]: https://getporter.org/project/version-strategy/
+[version strategy]: https://getporter.org/references/version-strategy/
 [Custom Windows CI Agent]: https://getporter.org/src/infra/custom-windows-ci-agent.md

CONTRIBUTORS.md

@@ -87,3 +87,4 @@ and we will add you. **All** contributors belong here. 💯
 * [Phill Gibson](https://github.com/phillipgibson)
 * [Ludvig Liljenberg](https://github.com/ludfjig)
 * [Maninderjit Bindra](https://github.com/manisbindra)
+* [Gonçalo Montalvão Marques](https://github.com/gonmmarques)