fix: use the correct file extension

[NachoVazquez]

PR Checklist

Please check if your PR fulfills the following requirements:

• [x] The commit message follows our guidelines: CONTRIBUTING.md#commit
• [ ] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

We only see bugs template because we are using the wrong file extensions.

Fixes: #42

What is the new behavior?

We are using the file extensions for the templates

Does this PR introduce a breaking change?

[ ] Yes
[x] No

[cloudflare-pages[bot]]

Deploying nx-cloudflare-next-example with    Cloudflare Pages

Latest commit:	c3bdc65
Status:	✅  Deploy successful!
Preview URL:	https://1115a3ff.oss-9xl.pages.dev
Branch Preview URL:	https://chore-fix-issue-templates.oss-9xl.pages.dev

View logs