fix typos

Author: mythz

src/ServiceStack.Hello/default.htm

@@ -406,7 +406,7 @@ <h4>The Web Service Index Metadata page</h4>
                 A list of all your webservices and the endpoints they are available on.
             </li>
             <li>
-                A list of coding examples showing you how to call each endpoing a number of different ways.
+                A list of coding examples showing you how to call each endpoint a number of different ways.
             </li>
             <li>
                 Links to all the XSD types used by your web services
@@ -421,7 +421,7 @@ <h2>The different ways of calling your Web Service</h2>
 
     <p>
         Without any configuration required, your web services are callable
-        via the following endpoints, formats and calling convetions.
+        via the following endpoints, formats and calling conventions.
     </p>
 
     <div class="endpoints">