fix: AppConfiguration-ConfigurationStore - Changed replicas to `rep…

…lica` (#3676)

## Description

Changing folder name to singular to align with AVM spec: [resource
module
naming](https://azure.github.io/Azure-Verified-Modules/specs/shared/#bicep-resource-module-naming)

## Pipeline Reference

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| Pipeline |
| -------- |
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[![avm.res.app-configuration.configuration-store](https://github.com/Azure/bicep-registry-modules/actions/workflows/avm.res.app-configuration.configuration-store.yml/badge.svg?branch=users%2Falsehr%2FcongigurationStoreSingular&event=workflow_dispatch)](https://github.com/Azure/bicep-registry-modules/actions/workflows/avm.res.app-configuration.configuration-store.yml)
|

## Type of Change

<!-- Use the checkboxes [x] on the options that are relevant. -->

- [ ] Update to CI Environment or utilities (Non-module affecting
changes)
- [ ] Azure Verified Module updates:
- [x] Bugfix containing backwards-compatible bug fixes, and I have NOT
bumped the MAJOR or MINOR version in `version.json`:
- [ ] Someone has opened a bug report issue, and I have included "Closes
#{bug_report_issue_number}" in the PR description.
- [ ] The bug was found by the module author, and no one has opened an
issue to report it yet.
- [ ] Feature update backwards compatible feature updates, and I have
bumped the MINOR version in `version.json`.
- [ ] Breaking changes and I have bumped the MAJOR version in
`version.json`.
  - [ ] Update to documentation

avm/res/app-configuration/configuration-store/key-value/main.json

@@ -5,8 +5,8 @@
   "metadata": {
     "_generator": {
       "name": "bicep",
-      "version": "0.29.47.4906",
-      "templateHash": "11258786733278014615"
+      "version": "0.30.23.60470",
+      "templateHash": "7176115037834080970"
     },
     "name": "App Configuration Stores Key Values",
     "description": "This module deploys an App Configuration Store Key Value.",

avm/res/app-configuration/configuration-store/main.bicep

@@ -209,7 +209,7 @@ module configurationStore_keyValues 'key-value/main.bicep' = [
   }
 ]
 
-module configurationStore_replicas 'replicas/main.bicep' = [
+module configurationStore_replicas 'replica/main.bicep' = [
   for (replicaLocation, index) in (replicaLocations ?? []): {
     name: '${uniqueString(deployment().name, location)}-AppConfig-Replicas-${index}'
     params: {