[Dev] Simplify `generateChangelogText` function

[cjmaxik]

Something like this:

const generateChangelogText = (type, lang) => {
    if (!changelogText[type] || !changelogText[type][lang]) {
        return "<ul><li>🤷</li></ul>";
    }

    const changes = changelogText[type][lang];
    return `
        <ul>
            ${changes.map(change => `<li>${change}</li>`).join('')}
        </ul>
    `;
}