fix: use correct capitalisation

Co-authored-by: Wojciech Kocjan <wkocjan@influxdata.com>

.circleci/get-deploy-tags.sh

@@ -19,7 +19,7 @@ set -euo pipefail
 
 DOCKER_IMAGE_TAG=${1}
 DOCKER_IMAGE="quay.io/influxdb/fusion"
-APP_NAME="iox"
+APP_NAME="IOx"
 
 DOCKER_IMAGE_INFO="$(docker images "${DOCKER_IMAGE}" --format '{{.Tag}} {{.Digest}}') | grep "${DOCKER_IMAGE_TAG}""
 
@@ -42,4 +42,4 @@ jq --null-input --sort-keys \
 		Tag: ($imgPrefix + ":" + $td[0]),
 		Digest: ($imgPrefix + "@" + $td[1]),
 		}
-	}'
+	}'