docs(types): null chk descriptions, type placement updates (#8125)

tools/dgeni/templates/method.template.html

@@ -9,11 +9,13 @@
       </th>
     </tr>
   </thead>
+  {%- if method.description -%}
   <tr class="docs-api-method-description-row">
     <td colspan="2" class="docs-api-method-description-cell">
       {$ method.description | marked | safe $}
     </td>
   </tr>
+  {%- endif -%}
 
   {%- if method.params.length -%}
   <thead>

tools/dgeni/templates/property.template.html

@@ -23,9 +23,8 @@
     {%- endif -%}   
 
     <p class="docs-api-property-name">
-      {$ property.name $}
+      <code>{$ property.name $}: {$ property.type $}</code>
     </p>
-    <code class="docs-api-property-type">{$ property.type $}</code>
   </td>
   <td class="docs-api-property-description">{$ property.description | marked | safe $}</td>
 </tr>