Fix filter

Author: jeffgabhart

src/ServiceStack.OrmLite.PostgreSQL.Tests/EnumTests.cs

@@ -64,7 +64,7 @@ public void CanQueryByEnumValue_using_select_with_string()
                 con.Save(new TypeWithEnum { Id = 2, EnumValue = SomeEnum.Value1 });
                 con.Save(new TypeWithEnum { Id = 3, EnumValue = SomeEnum.Value2 });
 
-                var target = con.SelectFmt<TypeWithEnum>("\"EnumValue\" = {0}", SomeEnum.Value1);
+                var target = con.SelectFmt<TypeWithEnum>("\"enum_value\" = {0}", SomeEnum.Value1);
 
                 Assert.AreEqual(2, target.Count());
             }