bug: external paper does not have ID

[jes089]

Missing "MARKER" in data/data-papers.yaml for below paper:

---
MARKER: ''
TYPE: article
AUTHOR: Rashed, M., Urrahamn, A.
TITLE: A Variance Based Privacy Protection from P2P Botnet Problems in Social Media
SERIAL: International Journal of Advance Technology and Innovative Research
YEAR: 2017-09
VOLUME: '9'
PAGE: 1717-1724
DOI: ''
URL: http://www.ijatir.org/uploads/132654IJATIR15677-331.pdf
TOPKEY: ddos-20070804
GEOLOC: Telangana, IN
ABS: ''
---

[bhuffaker]

added a marker c15d52a402518e5eb6b5e86920dae34405c4f773