documentation improvement.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@22179 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/resources/lib/hudson/node.jelly

@@ -22,16 +22,17 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 -->
 
-<!--
-    displays a link to a slave
--->
 <j:jelly xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:d="jelly:define" xmlns:l="/lib/layout" xmlns:t="/lib/hudson" xmlns:f="/lib/form">
+  <st:documentation>
+    Displays a link to a node.
+    <st:attribute name="value" use="required" type="Node"/>
+  </st:documentation>
   <j:choose>
-    <j:when test="${value!=null}">
+    <j:when test="${value!=null and value!=app}">
       <a href="${rootURL}/computer/${value.nodeName}">${value.nodeName}</a>
     </j:when>
     <j:otherwise>
-      (${%master})
+      ${%master}
     </j:otherwise>
   </j:choose>
 </j:jelly>
\ No newline at end of file