Cosmetics

Doc/Sd1/appendix.xml

@@ -564,7 +564,7 @@ Value 2147483645 is not prime.
       </informalfigure>
 
       <para>This allows for running your application with a maximum of 4
-      gigabytes heap space.</para>
+      gigabytes of heap space.</para>
 
       <para>With respect to automated unit testing (<command>mvn</command>
       <option>test</option>)you may want to set the same value in you