Update metadata for Orangeline

Orangeline page needs updated metadata

    <!-- favicons -->
    <link rel="apple-touch-icon" sizes="180x180" href="https://cdn.knightlab.com/libs/orangeline/latest/assets/assets/favicons/apple-touch-icon.png">
    <link rel="icon" type="image/png" href="https://cdn.knightlab.com/libs/orangeline/latest/assets/assets/favicons/favicon-32x32.png" sizes="32x32">
    <link rel="icon" type="image/png" href="https://cdn.knightlab.com/libs/orangeline/latest/assets/assets/favicons/favicon-16x16.png" sizes="16x16">
    <link rel="manifest" href="https://cdn.knightlab.com/libs/orangeline/latest/assets/assets/favicons/manifest.json">
    <link rel="mask-icon" href="https://cdn.knightlab.com/libs/orangeline/latest/assets/assets/favicons/safari-pinned-tab.svg" color="#5bbad5">
    <meta name="theme-color" content="#ffffff">
    <!-- /favicons -->

    <!-- Meta -->
    <meta name="keywords" content="story, news, social media, create, twitter, journalism, maps">
    <meta name="description" content="Maps that tell stories.">
    <!-- /Meta -->

    <!-- Open Graph -->
    <meta property="og:type" content="article" />
    <meta property="og:title" content="StoryMap" />
    <meta property="og:description" content="Maps that tell stories." />
    <meta property="og:image" content="https://cdn.knightlab.com/libs/orangeline/latest/assets/screenshot-storymap.png" />
    <meta property="og:url" content="https://storymap.knightlab.com" />
    <meta property="og:site_name" content="StoryMap" />
    <!-- /Open Graph -->

    <!-- Twitter Card -->
    <meta name="twitter:title" content="StoryMap">
    <meta name="twitter:description" content="Maps that tell stories.">
    <meta name="twitter:image" content="https://cdn.knightlab.com/libs/orangeline/latest/assets/screenshot-storymap.png">
    <meta name="twitter:site" content="@knightlab">
    <meta name="twitter:creator" content="@knightlab">
    <!-- /Twitter Card -->

The issue does not name a file; search the repository for the supplied Orangeline metadata or the screenshot-storymap.png URL to locate the page template. Compare its metadata with the block in the issue, update the page values as specified, and verify the resulting HTML contains the requested favicon, description, Open Graph, and Twitter Card metadata.