Update CONTRIBUTING.md with new location of dashboard and workspace loader (#16430)
Update CONTRIBUTING.md with new location of dashboard and workspace loader (#16430)

* Update CONTRIBUTING.md with new location of dashboard and workspace loader

Signed-off-by: Sergii Kabashniuk <29c0f357da1539d701cf38481baf17db5d000cda@redhat.com>
codenvy/che,codenvy/che,codenvy/che,codenvy/che