fix typos

Author: annevk

cssom/Overview.html

@@ -1817,8 +1817,8 @@ <h3 id=the-windowlayout><span class=secno>4.1. </span>The <code><a
   readonly attribute float            <a href="#outerheight" title=windowlayout-outerheight>outerHeight</a>;
   readonly attribute float            <a href="#pagexoffset" title=windowlayout-pagexoffset>pageXOffset</a>;
   readonly attribute float            <a href="#pageyoffset" title=windowlayout-pageyoffset>pageYOffset</a>;
-  readonly attribute float            <a href="#screeny" title=windowlayout-screenx>screenX</a>;
-  readonly attribute float            <span title=windowlayout-screeny>screenY</span>;
+  readonly attribute float            <a href="#screenx" title=windowlayout-screenx>screenX</a>;
+  readonly attribute float            <a href="#screeny" title=windowlayout-screeny>screenY</a>;
   readonly attribute <a href="#screen0">Screen</a>           <a href="#screen" title=windowlayout-screen>screen</a>;
 };</pre>
   <!-- XXX float? -->
@@ -1867,14 +1867,14 @@ <h3 id=the-windowlayout><span class=secno>4.1. </span>The <code><a
    <dd>This attribute <em class=ct>must</em> be the number of pixels the user
     has scrolled to the bottom.
 
-   <dt><dfn id=screenx title=windowlayout-screenx><code>screenx</code></dfn>
+   <dt><dfn id=screenx title=windowlayout-screenx><code>screenX</code></dfn>
 
    <dd>In web browsers, this attribute <em class=ct>must</em> be the amount
     of of pixels to the left of the browser window offsetted against the
     screen of the output device. Otherwise, this <em class=ct>must</em> be
     <code>0</code>.
 
-   <dt><dfn id=screeny title=windowlayout-screenx><code>screeny</code></dfn>
+   <dt><dfn id=screeny title=windowlayout-screeny><code>screenY</code></dfn>
 
    <dd>In web browsers, this attribute <em class=ct>must</em> be the amount
     of of pixels to the top of the browser window offsetted against the

cssom/Overview.src.html

@@ -1509,14 +1509,14 @@ <h3>The <code>WindowLayout</code> Interface</h3>
    <dd>This attribute <em class="ct">must</em> be the number of pixels the user
    has scrolled to the bottom.</dd>
 
-   <dt><dfn title="windowlayout-screenx"><code>screenx</code></dfn></dt>
+   <dt><dfn title="windowlayout-screenx"><code>screenX</code></dfn></dt>
 
    <dd>In web browsers, this attribute <em class="ct">must</em> be the amount of
    of pixels to the left of the browser window offsetted against the screen of
    the output device. Otherwise, this <em class="ct">must</em> be
    <code>0</code>.</dd>
 
-   <dt><dfn title="windowlayout-screenx"><code>screeny</code></dfn></dt>
+   <dt><dfn title="windowlayout-screeny"><code>screenY</code></dfn></dt>
 
    <dd>In web browsers, this attribute <em class="ct">must</em> be the amount of
    of pixels to the top of the browser window offsetted against the screen of