fixed typo.

src/docs/asciidoc/jme3/advanced/custom_controls.adoc

@@ -263,7 +263,7 @@ public class MyControl extends MyCustomClass implements MyControlInterface {
 == Best Practices
 
 
-Use the getControl() accessor to get Control objects from Spatials. No need to pass around lots of object references.Here an example from the link:http://code.google.com/p/monkeyzone/[MonkeyZone] code:
+Use the getControl() accessor to get Control objects from Spatials. No need to pass around lots of object references. Here's an example from the link:http://code.google.com/p/monkeyzone/[MonkeyZone] code:
 
 [source,java]
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