Update issue templates

.github/ISSUE_TEMPLATE/isssue--cors-not-working.md

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+---
+name: 'Isssue: CORS not working'
+about: CORS requests are blocked, follow these steeps
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Before you start**
+
+[ ] Update to the latest version by running `composer update agungsugiarto/codeigniter4-cors`
+[ ] Make sure that Apache/nginx/etc are NOT also adding CORS headers
+
+**Check your config**
+
+[ ]  Double-check your config file with the version from the repo.
+[ ]  Make sure the filter is added to your config filter.
+
+**Make the request**
+
+Open Chrome Devtools to see which requests are actually happening. Make sure you see the actual OPTIONS requests for POST/PUT/DELETE (see https://stackoverflow.com/questions/57410051/chrome-not-showing-options-requests-in-network-tab)
+
+Please show the actual request + response headers as sent by the OPTIONS request and the POST request (when available)