spacing, attribution, clearer language

_includes/header.njk

@@ -1,7 +1,7 @@
 <header>
     <nav>
       <ul>
-        <li>  <a id="skip" href="#main">skip to content</a></li>
+        <li><a id="skip" href="#main">skip to content</a></li>
         <li><a href="/" {% if page.url === "/" %}aria-current="page"{% endif %}>home page</a></li>
         <li><a href="/about/" {% if page.url === "/about/" %}aria-current="page"{% endif %}>about this site</a></li>
         <li><a href="/submit/" {% if page.url === "/submit/" %}aria-current="page"{% endif %}>submit a listing</a></li>