spell checking fixed (explanation instead of explaination)

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@6920 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/resources/hudson/model/Hudson/legend.jelly

@@ -40,27 +40,27 @@
         <tr><td>
           <img src="images/48x48/health-80plus.gif" />
           Project health is at least 80%. You can hover the mouse over the project's icon for a more detailed
-          explaination.
+          explanation.
         </td></tr>
         <tr><td>
           <img src="images/48x48/health-60to79.gif" />
           Project health at least 60% but less than 80%. You can hover the mouse over the project's icon for a more
-          detailed explaination.
+          detailed explanation.
         </td></tr>
         <tr><td>
           <img src="images/48x48/health-40to59.gif" />
           Project health at least 40% but less than 60%. You can hover the mouse over the project's icon for a
-          more detailed explaination.
+          more detailed explanation.
         </td></tr>
         <tr><td>
           <img src="images/48x48/health-20to39.gif" />
           Project health at least 20% but less than 40%. You can hover the mouse over the project's icon for a
-          more detailed explaination.
+          more detailed explanation.
         </td></tr>
         <tr><td>
           <img src="images/48x48/health-00to19.gif" />
           Project health is less than 20%. You can hover the mouse over the project's icon for a more detailed
-          explaination.
+          explanation.
         </td></tr>
       </table>
     </l:main-panel>