Fix typo(s) in css3/filters/effect-reference-composite*.html

third_party/WebKit/LayoutTests/css3/filters/effect-reference-composite-hw.html

 <svg xmlns="http://www.w3.org/2000/svg" width="0" height="0" version="1.1">
   <defs>
     <filter id="over" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
       <feComposite in2="transp" operator="over"/>
     </filter>
     <filter id="in" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
@@ skipping 40 matching lines @@
       <feComposite in2="transp" operator="atop" x="20" y="20" width="120" height="50"/>
     </filter>
     <filter id="xor-subregion" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
       <feComposite in2="transp" operator="xor" x="20" y="20" width="120" height="50"/>
     </filter>
     <filter id="arithmetic-subregion" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
-      <feComposite in2="transp" operator="arithmetic" k1="0" k2="1" k3="1" k4="0" x="20" y=20" width="120" height="50"/>
+      <feComposite in2="transp" operator="arithmetic" k1="0" k2="1" k3="1" k4="0" x="20" y="20" width="120" height="50"/>
     </filter>
   </defs>
 </svg>
 <style>
 img {
     margin: 10px;
     transform: translateZ(0);
 }
 </style>
 <img style="-webkit-filter: url(#over); filter: url(#over);" src="resources/reference.png">
 <img style="-webkit-filter: url(#in);   filter: url(#in);"   src="resources/reference.png">
 <img style="-webkit-filter: url(#out);  filter: url(#out);"  src="resources/reference.png">
 <img style="-webkit-filter: url(#atop); filter: url(#atop);" src="resources/reference.png">
 <img style="-webkit-filter: url(#xor);  filter: url(#xor);"  src="resources/reference.png">
 <img style="-webkit-filter: url(#arithmetic);  filter: url(#arithmetic);"  src="resources/reference.png">
 <img style="-webkit-filter: url(#over-subregion); filter: url(#over-subregion);" src="resources/reference.png">
 <img style="-webkit-filter: url(#in-subregion);   filter: url(#in-subregion);"   src="resources/reference.png">
 <img style="-webkit-filter: url(#out-subregion);  filter: url(#out-subregion);"  src="resources/reference.png">
 <img style="-webkit-filter: url(#atop-subregion); filter: url(#atop-subregion);" src="resources/reference.png">
 <img style="-webkit-filter: url(#xor-subregion);  filter: url(#xor-subregion);"  src="resources/reference.png">
 <img style="-webkit-filter: url(#arithmetic-subregion);  filter: url(#arithmetic-subregion);"  src="resources/reference.png">