Editorial: fix a few extra domintro spaces

These were missed in 0d63ebc.

source

@@ -71563,29 +71563,24 @@ dictionary <dfn dictionary>ValidityStateFlags</dfn> {
    <dd><p>Marks <var>internals</var>'s <span data-x="internals-target">target element</span> as
    <span data-x="concept-fv-valid">satisfying its constraints</span>.</p></dd>
 
-   <dt><code data-x=""><var>internals</var> .
-   <span data-x="dom-ElementInternals-willValidate">willValidate</span></code></dt>
-
+   <dt><code data-x=""><var>internals</var>.<span data-x="dom-ElementInternals-willValidate">willValidate</span></code></dt>
    <dd><p>Returns true if <var>internals</var>'s <span data-x="internals-target">target
    element</span> will be validated when the form is submitted; false otherwise.</p></dd>
 
    <dt><code data-x=""><var>internals</var>.<span data-x="dom-ElementInternals-validity">validity</span></code></dt>
    <dd><p>Returns the <code>ValidityState</code> object for <var>internals</var>'s <span
    data-x="internals-target">target element</span>.</p></dd>
 
-   <dt><code data-x=""><var>internals</var> .
-   <span data-x="dom-ElementInternals-validationMessage">validationMessage</span></code></dt>
+   <dt><code data-x=""><var>internals</var>.<span data-x="dom-ElementInternals-validationMessage">validationMessage</span></code></dt>
    <dd><p>Returns the error message that would be shown to the user if <var>internals</var>'s <span
    data-x="internals-target">target element</span> was to be checked for validity.</p></dd>
 
-   <dt><code data-x=""><var>valid</var> = <var>internals</var> .
-   <span data-x="dom-ElementInternals-checkValidity">checkValidity()</span></code></dt>
+   <dt><code data-x=""><var>valid</var> = <var>internals</var>.<span data-x="dom-ElementInternals-checkValidity">checkValidity()</span></code></dt>
    <dd><p>Returns true if <var>internals</var>'s <span data-x="internals-target">target
    element</span> has no validity problems; false otherwise. Fires an <code
    data-x="event-invalid">invalid</code> event at the element in the latter case.</p></dd>
 
-   <dt><code data-x=""><var>valid</var> = <var>internals</var> .
-   <span data-x="dom-ElementInternals-reportValidity">reportValidity()</span></code></dt>
+   <dt><code data-x=""><var>valid</var> = <var>internals</var>.<span data-x="dom-ElementInternals-reportValidity">reportValidity()</span></code></dt>
    <dd><p>Returns true if <var>internals</var>'s <span data-x="internals-target">target
    element</span> has no validity problems; otherwise, returns false, fires an <code
    data-x="event-invalid">invalid</code> event at the element, and (if the event isn't canceled)