Updated git submodules

Project: appc master dd65bb9d1a5359e9a13e24338bf5cf52283edc73

added test xml data to xml_data.xml

the code coverage for isXML method in CheckDataTool.java in
appc-config-generator was failing because there was no data in
xml_data.xml. So, added some test data. Now the coverage is happening
properly.

Issue-ID: APPC-1086
Change-Id: Iab203d502b145a83e7479dfaabfe8474ec629d90
Signed-off-by: Sandeep J <sandeejh@in.ibm.com>

diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index c7df882..dd65bb9 160000 (submodule)
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit c7df8822f644fbaea27ef63a01dfbe05acb39eab
+Subproject commit dd65bb9d1a5359e9a13e24338bf5cf52283edc73