Merge pull request #615 from nextcloud/stable9-ns-server-contributing.md

[stable9] change core to server - backport of #533

CONTRIBUTING.md

@@ -11,7 +11,7 @@ If you have questions about how to install or use Nextcloud, please direct these
   - Go to one of the repositories, click "issues" and type any word in the top search/command bar.
   - You can also filter by appending e. g. "state:open" to the search string.
   - More info on [search syntax within github](https://help.github.com/articles/searching-issues)
-* This repository ([core](https://github.com/nextcloud/core/issues)) is *only* for issues within the Nextcloud Server code. This also includes the apps: files, encryption, external storage, sharing, deleted files, versions, LDAP, and WebDAV Auth
+* This repository ([server](https://github.com/nextcloud/server/issues)) is *only* for issues within the Nextcloud Server code. This also includes the apps: files, encryption, external storage, sharing, deleted files, versions, LDAP, and WebDAV Auth
 * __SECURITY__: Report any potential security bug to us via security@nextcloud.com following our [security policy](https://nextcloud.com/security/) instead of filing an issue in our bug tracker-
 * The issues in other components should be reported in their respective repositories: You will find them in our [GitHub Organization](https://github.com/nextcloud/)