fixed typo, spotted by @tnvu

Author: sarabander

content.opf

@@ -8,7 +8,7 @@
     <dc:identifier id="bookid">urn:uuid:a412368e-e0ac-42ce-8c01-0f0da52f5731</dc:identifier>
     <dc:language>en-US</dc:language>
     <meta name="cover" content="cover-image"/>
-    <meta property="dcterms:modified">2014-01-09T21:47:17Z</meta>
+    <meta property="dcterms:modified">2014-01-29T17:19:56Z</meta>
   </metadata>
   <manifest>
     <item id="css-style" href="html/css/style.css" media-type="text/css"/>

html/UTF.xhtml

@@ -106,7 +106,7 @@ browser wars? Anyway, the aim of the project is to approach the quality of LaTeX
 output by using the <abbr>HTML5</abbr> toolbox. JavaScript, <abbr>CSS3</abbr>, <abbr>SVG</abbr>,
 MathJax, MathML, and web fonts are employed here. Due to the experimental
 nature of this undertaking, there will be glitches and errors in some browsers. 
-Techical and artistic help is appreciated. In the meantime, enjoy the book, and 
+Technical and artistic help is appreciated. In the meantime, enjoy the book, and 
 fire up a <abbr>REPL</abbr>!
 <i>A.R, January, 2014</i>
 </p>