Fix definitiion of _DOC_VERS in jgit.bzl
Fix definitiion of _DOC_VERS in jgit.bzl

_JGIT_VERS should not be enclosed in quotes. This causes it to be
literally included in the doc URL, resulting in a javadoc error
when building the API:

  javadoc: warning - Error fetching URL: http://download.eclipse.org/jgit/site/_JGIT_VERS/apidocs/

Change-Id: Ifce43c48755a5687d5b2807de4dcfb5d14566056

qtproject/qtqa-gerrit,WANdisco/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,qtproject/qtqa-gerrit,qtproject/qtqa-gerrit,qtproject/qtqa-gerrit,qtproject/qtqa-gerrit,GerritCodeReview/gerrit,qtproject/qtqa-gerrit,WANdisco/gerrit,GerritCodeReview/gerrit,WANdisco/gerrit,GerritCodeReview/gerrit,qtproject/qtqa-gerrit,WANdisco/gerrit,GerritCodeReview/gerrit,WANdisco/gerrit,WANdisco/gerrit,WANdisco/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit