minor fix: category name of feature JNI.

releng/fr.irisa.cairn.gecos.tools.jnimapper.update/category.xml

@@ -4,7 +4,7 @@
   </description>
 
   <feature id="fr.irisa.cairn.gecos.tools.jnimapper.feature" version="1.0.0.qualifier">
-     <category name="Core"/>
+     <category name="jni"/>
   </feature>
   <!-- source features (and their bundles) are automatically generated by maven when using "release" profile -->
   <feature id="fr.irisa.cairn.gecos.tools.jnimapper.feature.source" version="1.0.0.qualifier">