Missing required OpenGraph tags for sharing

[chollma]

OpenGraph tags are important for sharing GitHub repositories on social media channels, increasing visibility, and the number of people using this tool.

Current State
<meta property="og:title" content="Stardew Checkup" />

<meta property="og:description" content="An app to read a Stardew Valley save file, check the progress of various achievements and milestones, and list what's missing. " />

<meta property="og:image" content="https://mouseypounds.github.io/stardew-checkup/og-embed-image.png" />

Missing: Locale, Type, URL

Ideal State
<meta name="og:url" content="https://mouseypounds.github.io/stardew-checkup/">
<meta name="og:type" content="website">
<meta property="og:title" content="Stardew Checkup" />
<meta property="og:description" content="An app to read a Stardew Valley save file, check the progress of various achievements and milestones, and list what's missing. " />
<meta property="og:image" content="https://mouseypounds.github.io/stardew-checkup/og-embed-image.png" />
<meta name="og:locale" content="en_US">