[bug] Doc BYO template issue; missing label description

[foexle]

Describe the bug
Missing label description in the doc when "bring your own template".

The doc about BYO template describes how to create/define the CRDs but the service (flux) will not find those objects.
It seems the objects related to flux requires the "hmc" labels eq. to:

apiVersion: source.toolkit.fluxcd.io/v1
kind: HelmRepository
metadata:
labels:
hmc.mirantis.com/managed: "true"
name: custom-helm
namespace: hmc-system
spec:
interval: 10m0s
provider: generic
[...]

To Reproduce
Steps to reproduce the behavior:

1. Follow the doc
2. check the status

➜  helm-repos git:(main) ✗ kubectl get helmrepository -n hmc-system                   
NAME            URL                                  AGE    READY   STATUS
custom-helm     https://foexle.github.io/helm-hmc/   10m            
hmc-templates   oci://ghcr.io/mirantis/hmc/charts    6d2h 

➜  helm-repos git:(main) ✗ kubectl get HelmChart -n hmc-system     
NAME                                 CHART                          VERSION   SOURCE KIND      SOURCE NAME     AGE    READY   STATUS
aws-eks-0-0-2                        aws-eks                        0.0.2     HelmRepository   hmc-templates   6d2h   True    pulled 'aws-eks' chart with version '0.0.2'
aws-hosted-cp-0-0-3                  aws-hosted-cp                  0.0.3     HelmRepository   hmc-templates   6d2h   True    pulled 'aws-hosted-cp' chart with version '0.0.3'
aws-hosted-cp-extended               aws-hosted-cp-extended         *         HelmRepository   custom-helm     21m    False   failed to get source: HelmRepository.source.toolkit.fluxcd.io "custom-helm" not found

Expected behavior
The templates should be created/defined and clustertemplate status should be "valid"