Merge pull request #6120 from influxdata/pbarnett/update-quick-start-for-explorer

Update: Add install info to the Explorer Quick Start

Author: jstirnaman

content/influxdb3/explorer/_index.md

@@ -32,6 +32,10 @@ Use InfluxDB 3 Explorer for:
 Run the Docker image to start InfluxDB 3 Explorer:
 
 ```sh
+# Pull the Docker image
+docker pull quay.io/influxdb/influxdb3-explorer:latest
+
+# Run the Docker container
 docker run --detach \
   --name influxdb3-explorer \
   --publish 8888:80 \