AVRO-2038 fix extra characters in build.xml
AVRO-2038 fix extra characters in build.xml

Strip the extra characters presented by VERSION.txt to build.xml in the doc creation.

This closes #228

Signed-off-by: sacharya <0abd0df55eb02d47bf2d3e301d3310c4d084e10b@apache.org>

apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro