docs(downloader): Fix link to version control systems

Signed-off-by: Martin Nonnenmacher <martin.nonnenmacher@bosch.com>

website/docs/tools/downloader.md

@@ -5,7 +5,7 @@ sidebar_position: 3
 # Downloader
 
 Taking an ORT result file with an *analyzer* result as the input (`-i`), the *downloader* retrieves the source code of all contained packages to the specified output directory (`-o`).
-The *downloader* takes care of things like normalizing URLs and using the [appropriate VCS tool](https://github.com/oss-review-toolkit/ort/blob/main/downloader/src/main/kotlin/vcs) to check out source code from version control.
+The *downloader* takes care of things like normalizing URLs and using the [appropriate VCS tool](https://github.com/oss-review-toolkit/ort/blob/main/plugins/version-control-systems) to check out source code from version control.
 
 Currently, the following Version Control Systems (VCS) are supported: