Point SDK download link to latest release of SDK

src/docs/asciidoc/documentation.adoc

@@ -28,9 +28,9 @@ a| Use jMonkeyEngine in another IDE
 a| Build custom engine from sources
 
 a| Then download…
-a| link:https://github.com/jMonkeyEngine/sdk/releases/tag/stable[jMonkeyEngine SDK]
+a| link:https://github.com/jMonkeyEngine/sdk/releases[jMonkeyEngine SDK]
 a| link:https://github.com/jMonkeyEngine/sdk/releases[Binaries]
-a| link:https://github.com/jMonkeyEngine/jmonkeyengine[Sources]
+a| link:https://github.com/jMonkeyEngine/jmonkeyengine[Engine Sources]
 
 a| You receive…
 a| SDK, binaries, javadoc, sources