Fix some HTML errors and deal with - - >

Author: gkellogg

common/common.js

@@ -272,5 +272,6 @@ function unComment(doc, content) {
     .replace(/<!--/, '')
     .replace(/-->/, '')
     .replace(/< !\s*-\s*-/g, '<!--')
-    .replace(/-\s*- >/g, '-->');
+    .replace(/-\s*- >/g, '-->')
+    .replace(/-\s*-\s*&gt;/g, '--&gt;');
 }

common/extract-examples.rb

@@ -223,7 +223,7 @@ def save_example(examples:, element:, title:, example_number:, error:, warn:)
         examples[title] = {
           title: title,
           filename: fn,
-          content: content.to_s.gsub(/^\s*< !\s*-\s*-/, '<!--').gsub(/-\s*- >/, '-->'),
+          content: content.to_s.gsub(/^\s*< !\s*-\s*-/, '<!--').gsub(/-\s*- >/, '-->').gsub(/-\s*-\s*&gt;/, '--&gt;'),
           content_type: element.attr('data-content-type'),
           number: example_number,
           ext: ext,

index.html

@@ -8434,7 +8434,7 @@ <h3>Graph Containers</h3>
     JSON-LD content can be easily embedded in HTML [[HTML52]] by placing
     it in a <a data-cite="HTML52/semantics-scripting.html#the-script-element">Script element</a> with the <code>type</code> attribute set to
     <code>application/ld+json</code>. Doing so creates a
-    <a data-cite="https://www.w3.org/TR/html52/semantics-scripting.html#data-block">data block</a>.</p>
+    <a data-cite="HTML52/semantics-scripting.html#data-block">data block</a>.</p>
 
    <aside class="example ds-selector-tabs"
            title="Embedding JSON-LD in HTML">
@@ -8710,7 +8710,7 @@ <h3>Graph Containers</h3>
         "@context": "http://schema.org/",
         "@type": "WebPageElement",
         "name": "Encoding Issues",
-        "description": "Issues list such as unescaped &lt;/script&gt; or --&gt;"
+        "description": "Issues list such as unescaped &lt;/script&gt; or - -&gt;"
       }
       </script>
       -->
@@ -8723,7 +8723,7 @@ <h3>Graph Containers</h3>
         "@type": ["http://schema.org/WebPageElement"],
         "http://schema.org/name": [{"@value": "Encoding Issues"}],
         "http://schema.org/description": [
-          {"@value": "Issues list such as unescaped </script> or -- >"}
+          {"@value": "Issues list such as unescaped </script> or - - >"}
         ]
       }]
       -->
@@ -8738,7 +8738,7 @@ <h3>Graph Containers</h3>
 
       [ a schema:WebPageElement;
         schema:name "Encoding Issues";
-        schema:description "Issues list such as unescaped </script> or -- >"
+        schema:description "Issues list such as unescaped </script> or - - >"
       ] .
       -->
       </pre>