Fixing a typo in message (by Kevin LaBranche)

--HG--
branch : 1.x
extra : transplant_source : %B9%9E%BF%1A%E4%AE_%84J%EB%85%1C%02%AF%84%97%06%FF%B9%99

src/Orchard.Web/Modules/Orchard.Packaging/Commands/PackagingCommands.cs

@@ -89,7 +89,7 @@ namespace Orchard.Packaging.Commands {
             }
             catch(Exception e) {
                 // Exceptions area thrown by NuGet as error messages
-                throw new OrchardException(T(HttpUtility.HtmlDecode(T("Could not unintall the package: {0}", e.Message).Text)));
+                throw new OrchardException(T(HttpUtility.HtmlDecode(T("Could not uninstall the package: {0}", e.Message).Text)));
             }
         }
     }