Fix Basic Bearer auth examples for HTML2 Docs

[l0gicgate]

There were quite a few bugs with all the code examples for the HTML2 docs, it fixes all of them except Rust and Android because I'm unqualified with those languages.

The example templates are now all uniform following the same template patterns.

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• Read the contribution guidelines.
• If contributing template-only or documentation-only changes which will change sample output, build the project before.
• Run the shell script(s) under ./bin/ (or Windows batch scripts under.\bin\windows) to update Petstore samples related to your fix. This is important, as CI jobs will verify all generator outputs of your HEAD commit, and these must match the expectations made by your contribution. You only need to run ./bin/{LANG}-petstore.sh, ./bin/openapi3/{LANG}-petstore.sh if updating the code or mustache templates for a language ({LANG}) (e.g. php, ruby, python, etc).
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[wing328]

@l0gicgate thanks for the fix. We'll merge it and later see if other contributors can help review and fix Rust, Android code sample.

[billisonline]

Very excited to see this fix. I was about to report the same issue. Does anyone know when this will make it into a release?