Merge pull request #13226 from edx/asadiqbal08/update_release_tag_done_xblock

asadiqbal08/SOL-2020- updated the release tag for DoneXblock in edX-platform

requirements/edx/github.txt

@@ -85,7 +85,7 @@ git+https://github.com/edx/edx-val.git@0.0.9#egg=edxval==0.0.9
 git+https://github.com/pmitros/RecommenderXBlock.git@v1.1#egg=recommender-xblock==1.1
 git+https://github.com/solashirai/crowdsourcehinter.git@518605f0a95190949fe77bd39158450639e2e1dc#egg=crowdsourcehinter-xblock==0.1
 -e git+https://github.com/pmitros/RateXBlock.git@367e19c0f6eac8a5f002fd0f1559555f8e74bfff#egg=rate-xblock
--e git+https://github.com/pmitros/DoneXBlock.git@857bf365f19c904d7e48364428f6b93ff153fabd#egg=done-xblock
+-e git+https://github.com/pmitros/DoneXBlock.git@release-2016-08-10#egg=done-xblock
 git+https://github.com/edx/edx-milestones.git@v0.1.10#egg=edx-milestones==0.1.10
 git+https://github.com/edx/xblock-utils.git@v1.0.2#egg=xblock-utils==1.0.2
 -e git+https://github.com/edx-solutions/xblock-google-drive.git@138e6fa0bf3a2013e904a085b9fed77dab7f3f21#egg=xblock-google-drive