updates

Author: mikarinneoracle

application-development/cloud-native/oci-queue/README.md

@@ -36,6 +36,9 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 -->
 
+## OCI queue overview
+[Document queue-overview](https://github.com/oracle-devrel/technology-engineering/blob/martatolosa-queue/application-development/cloud-native/oci-queue/files/queue_overview.pdf)
+
 ## OCI Queue example in NodeJS with GitHub Actions
 
 ### OCI Queue