Issue with implicit convention in helm.valuefiles field of GetAppDetails api

[sjkim2322]

https://{host}/api/v1/repositories/{source.repoURL}/appdetails

The above api (in the case of helm) gets the necessary detail information from the helm chart of the repository.
The response of this api is also provided as an option to select the helm value file when creating an argo application in web ui.

In addition to values.yaml, custom-defined value files can be added to helm.valueFiles (e.g values-production.yaml).

argo-cd/reposerver/repository/repository.go

Line 717 in 05f5a79

if strings.Contains(fName, "values") && (filepath.Ext(fName) == ".yaml" || filepath.Ext(fName) == ".yml") {

According to the source link above, the files corresponding to the value file are filtered based on the path of the chart received from the repository (whether it contains "values" string or .yaml file or yml file).

Not all files under the chart path can be included in helm.valuesFiles, so filtering is required.

However, the convention "values" string must be included in the name of the value file is not visible in the helm documentation.

this seems like an implicit and habitual rule to those familiar with helm.

The helm itself doesn't actually need restrictions. Since the user directly specifies the file name
(helm install chart -f prod.yaml)

Due to the above issue, a file in the form of "prod.yaml" on the chart is not displayed on the ui.

Therefore, I hope that a note about this implicit restriction is added to the argo document.