Merge pull request #220 from briansu2004/patch-2

Update http-session.md
diff --git a/source/getting-started/themes.md b/source/getting-started/themes.md
index 6f97385..0a18d2a 100644
--- a/source/getting-started/themes.md
+++ b/source/getting-started/themes.md
@@ -54,7 +54,7 @@
 
 Notice how the HTML generated uses table tags to control the layout of the label and select HTML. There is also a class, 
 `tdLabel`, applied to the table column where the label tag is rendered. Since no theme was specified for the Struts 2 
-select tag the default `xhmtl` theme was used.
+select tag the default `xhtml` theme was used.
 
 ## Specifying The Theme Struts 2 Should Use