proper format of limits

Exercise-Configuration.md

@@ -286,6 +286,8 @@ Example:
 
 Mandatory items are bold, optional italic, description of items follows:
 
+* **${test identification}** - ...
+    * **${pipeline identification}** - ...
         * **${box identification}** - ...
             * _wall-time_ - ...
             * _memory_ - ...
@@ -294,10 +296,14 @@ Mandatory items are bold, optional italic, description of items follows:
 Example:
 
 ```
+test-id-1:
+  pipeline-id-1:
     box-id-1:
       wall-time: 5
       memory: 50
       parallel: 500
+test-id-2:
+  pipeline-id-2:
     box-id-2:
       wall-time: 6
       memory: 60