Fixed invalid arch value for filesystem aix ppc64

oldfeatures/org.eclipse.platform-feature/feature.xml

diff --git a/oldfeatures/org.eclipse.platform-feature/feature.xml b/oldfeatures/org.eclipse.platform-feature/feature.xml
index 902108b..633e95d 100644
--- a/oldfeatures/org.eclipse.platform-feature/feature.xml
+++ b/oldfeatures/org.eclipse.platform-feature/feature.xml
@@ -433,7 +433,7 @@
    <plugin
          id="org.eclipse.core.filesystem.aix.ppc64"
          os="aix"
-         arch="ppc"
+         arch="ppc64"
          download-size="0"
          install-size="0"
          version="0.0.0"