Update books.xml

Author: sukrucildirr

test/unit/assets/books.xml

@@ -83,7 +83,7 @@
       <genre>Science Fiction</genre>
       <price>6.95</price>
       <publish_date>2000-11-02</publish_date>
-      <description>After an inadvertant trip through a Heisenberg
+      <description>After an inadvertent trip through a Heisenberg
       Uncertainty Device, James Salway discovers the problems
       of being quantum.</description>
    </book>
@@ -117,4 +117,4 @@
       integrated into a comprehensive development
       environment.</description>
    </book>
-</catalog>
+</catalog>