RHIDP-6130: Update docs to refer to new secret name

[jmagak]

IMPORTANT: Do Not Merge - To be merged by Docs Team Only

Version(s): main, 1.4, 1.5

Add the relevant labels to the Pull Request.
Issue: https://issues.redhat.com/browse/RHIDP-6130

Preview links:

2.2. Configuring an external PostgreSQL instance using the Helm Chart

1.3. Installing dynamic plugins in an air-gapped environment

2.3.3. Loading a plugin packaged as a JavaScript package

[rhdh-bot]

Updated preview: https://redhat-developer.github.io/red-hat-developers-documentation-rhdh/pr-962/ @ 03/11/25 08:49:56

[rm3l]

/lgtm

[themr0c]

/cherry-pick release-1.4

[themr0c]

/cherry-pick release-1.5

[openshift-cherrypick-robot]

@themr0c: #962 failed to apply on top of branch "release-1.4":

Applying: Update docs to refer to new secret name
Using index info to reconstruct a base tree...
M	modules/configuring-external-databases/proc-configuring-postgresql-instance-using-helm.adoc
Falling back to patching base and 3-way merge...
Auto-merging modules/configuring-external-databases/proc-configuring-postgresql-instance-using-helm.adoc
CONFLICT (content): Merge conflict in modules/configuring-external-databases/proc-configuring-postgresql-instance-using-helm.adoc
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config advice.mergeConflict false"
Patch failed at 0001 Update docs to refer to new secret name

In response to this:

/cherry-pick release-1.4

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[openshift-cherrypick-robot]

@themr0c: new pull request created: #985

In response to this:

/cherry-pick release-1.5

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.