Add HTML example for <a> (issue #1014)

live-examples/html-examples/inline-text-semantics/a.html

@@ -0,0 +1,15 @@
+<h1 id="imprint">About this Website</h1>
+
+<p>This website was made and is maintained by Michael Bluth.</p>
+
+<p>You can reach Michael via:</p>
+
+<ul>
+  <li><a href="https://example.com">Website</a></li>
+  <li><a href="mailto:michael.bluth@example.com">Email</a></li>
+  <li><a href="tel:+123456789">Phone</a></li>
+</ul>
+
+<hr />
+
+<p><a href="#imprint">Back to top</a></p>

live-examples/html-examples/inline-text-semantics/css/a.css

@@ -0,0 +1,9 @@
+a[href^="http"]::before {
+  background: url(/media/examples/external-link-alt-solid.svg) no-repeat;
+  content: '';
+  display: inline-block;
+  margin-right: 3px;
+  opacity: .6;
+  width: .9em;
+  height: .8em;
+}

live-examples/html-examples/inline-text-semantics/meta.json

@@ -1,5 +1,16 @@
 {
     "pages": {
+        "a": {
+            "baseTmpl": "tmpl/live-tabbed-tmpl.html",
+            "exampleCode":
+                "live-examples/html-examples/inline-text-semantics/a.html",
+            "cssExampleSrc":
+                "live-examples/html-examples/inline-text-semantics/css/a.css",
+            "fileName": "a.html",
+            "title": "HTML Demo: <a>",
+            "type": "tabbed",
+            "height": "tabbed-shorter"
+        },
         "abbr": {
             "baseTmpl": "tmpl/live-tabbed-tmpl.html",
             "exampleCode":