pipeline: input: link docker-events

Signed-off-by: Eduardo Silva <[email protected]>

Author: edsiper

SUMMARY.md

@@ -71,6 +71,7 @@
   * [Collectd](pipeline/inputs/collectd.md)
   * [CPU Metrics](pipeline/inputs/cpu-metrics.md)
   * [Disk I/O Metrics](pipeline/inputs/disk-io-metrics.md)
+  * [Docker Events](pipeline/inputs/docker-events.md)
   * [Dummy](pipeline/inputs/dummy.md)
   * [Exec](pipeline/inputs/exec.md)
   * [Forward](pipeline/outputs/forward.md)