Update hello_input_system.adoc

Fixed list continuation for the "Defining Mappings and Triggers list.
Turned text tips in Admonition.

src/docs/asciidoc/jme3/beginner/hello_input_system.adoc

@@ -127,7 +127,7 @@ Have a look at the code:
 .  In the same line, you also register “Rotate to an alternative mouse click trigger. +
 `new MouseButtonTrigger(MouseInput.BUTTON_LEFT)`
 .  You map the `Pause`, `Left`, `Right` mappings to the P, J, K keys, respectively. 
-
++
 [source,java]
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@@ -139,12 +139,12 @@ Have a look at the code:
                                       new MouseButtonTrigger(MouseInput.BUTTON_LEFT));
 
 ----
-
++
 Now you need to register your trigger mappings.
 
 .  You register the pause action to the ActionListener, because it is an “on/off action.
 .  You register the movement actions to the AnalogListener, because they are gradual actions.
-
++
 [source,java]
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@@ -265,7 +265,9 @@ Mappings registered to the *ActionListener* are digital either-or actions –
 
 *  Example: Pause button, shooting, selecting, jumping, one-time click interactions.
 
-*Tip:* It's very common that you want an action to be only triggered once, in the moment when the key is _released_. For instance when opening a door, flipping a boolean state, or picking up an item. To achieve that, you use an `ActionListener` and test for `… && !keyPressed`. For an example, look at the Pause button code:
+[TIP]
+====
+It's very common that you want an action to be only triggered once, in the moment when the key is _released_. For instance when opening a door, flipping a boolean state, or picking up an item. To achieve that, you use an `ActionListener` and test for `… && !keyPressed`. For an example, look at the Pause button code:
 
 [source,java]
 ----
@@ -273,7 +275,7 @@ Mappings registered to the *ActionListener* are digital either-or actions –
         isRunning = !isRunning;
       }
 ----
-
+====
 
 == Table of Triggers
 
@@ -311,8 +313,10 @@ KeyTrigger(KeyInput.KEY_RIGHT)
 
 |===
 
-*Tip:* If you don't recall an input constant during development, you benefit from an IDE's code completion functionality: Place the caret after e.g. `KeyInput.|` and trigger code completion to select possible input identifiers.
-
+[TIP]
+====
+If you don't recall an input constant during development, you benefit from an IDE's code completion functionality: Place the caret after e.g. `KeyInput.|` and trigger code completion to select possible input identifiers.
+====
 
 == Exercises