grammatical error fix

[Boss-DG]

Corrected grammatical errors, such as fixing "build" to "built" and removing the extra question mark in "Will the protocol spec need to be updated?".

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PR-Codex overview

This PR focuses on correcting minor grammatical errors in the .github/ISSUE_TEMPLATE/feature.md file to improve clarity and readability.

Detailed summary

• Changed "should be build" to "should be built".
• Removed an extra question mark in "Will the protocol spec need to be updated??" to "Will the protocol spec need to be updated?".

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