Switch to stable Eclipse platform release URL

Change-Id: Iaf0c48e7f0a015edad3e09ebe1acd7ef80f05257
Signed-off-by: Markus Knauer <mknauer@eclipsesource.com>
diff --git a/releng/org.eclipse.rap.tools.build/target.definition/org.eclipse.rap.tools.target.definition.target b/releng/org.eclipse.rap.tools.build/target.definition/org.eclipse.rap.tools.target.definition.target
index 034d877..0b6caa3 100644
--- a/releng/org.eclipse.rap.tools.build/target.definition/org.eclipse.rap.tools.target.definition.target
+++ b/releng/org.eclipse.rap.tools.build/target.definition/org.eclipse.rap.tools.target.definition.target
@@ -27,7 +27,7 @@
 <unit id="org.eclipse.platform.source.feature.group" version="4.10.0.v20181206-0815"/>
 <unit id="org.eclipse.rcp.feature.group" version="4.10.0.v20181206-0815"/>
 <unit id="org.eclipse.rcp.source.feature.group" version="4.10.0.v20181206-0815"/>
-<repository location="http://download.eclipse.org/eclipse/updates/4.10milestones/S-4.10RC2-201812060815/"/>
+<repository location="http://download.eclipse.org/eclipse/updates/4.10/R-4.10-201812060815/"/>
 </location>
 <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="slicer" includeSource="true" type="InstallableUnit">
 <unit id="org.eclipse.license.feature.group" version="1.0.1.v20140414-1359"/>