Fixed {{anch}} macros, removed otherwise unused tags (#3258)

thanks!

files/en-us/web/html/element/input/tel/index.html

@@ -13,8 +13,6 @@
   - Input Type
   - Phone Numbers
   - Reference
-  - Telephone Numbers
-  - tel
 ---
 <div>{{HTMLRef("Input_types")}}</div>
 
@@ -72,31 +70,31 @@ <h2 id="Additional_attributes">Additional attributes</h2>
  </thead>
  <tbody>
   <tr>
-   <td><code>{{anch("list")}}</code></td>
+   <td><code>{{anch("attr-list","list")}}</code></td>
    <td>The id of the &lt;datalist&gt; element that contains the optional pre-defined autocomplete options</td>
   </tr>
   <tr>
-   <td><code>{{anch("maxlength")}}</code></td>
+   <td><code>{{anch("attr-maxlength","maxlength")}}</code></td>
    <td>The maximum length, in UTF-16 characters, to accept as a valid input</td>
   </tr>
   <tr>
-   <td><code>{{anch("minlength")}}</code></td>
+   <td><code>{{anch("attr-minlength","minlength")}}</code></td>
    <td>The minimum length that is considered valid for the field's contents</td>
   </tr>
   <tr>
-   <td><code>{{anch("pattern")}}</code></td>
+   <td><code>{{anch("attr-pattern","pattern")}}</code></td>
    <td>A regular expression the entered value must match to pass constraint validation</td>
   </tr>
   <tr>
-   <td><code>{{anch("placeholder")}}</code></td>
+   <td><code>{{anch("attr-placeholder","placeholder")}}</code></td>
    <td>An example value to display inside the field when it has no value</td>
   </tr>
   <tr>
-   <td><code>{{anch("readonly")}}</code></td>
+   <td><code>{{anch("attr-readonly","readonly")}}</code></td>
    <td>A Boolean attribute which, if present, indicates that the field's contents should not be user-editable</td>
   </tr>
   <tr>
-   <td><code>{{anch("size")}}</code></td>
+   <td><code>{{anch("attr-size","size")}}</code></td>
    <td>The number of characters wide the input field should be onscreen</td>
   </tr>
  </tbody>