Fix markdown
Fix markdown

the changelog markdown before v1.0 is broken.

chriszs/redash,vishesh92/redash,vishesh92/redash,chriszs/redash,alexanderlz/redash,hudl/redash,EverlyWell/redash,hudl/redash,crowdworks/redash,hudl/redash,rockwotj/redash,crowdworks/redash,moritz9/redash,alexanderlz/redash,denisov-vlad/redash,getredash/redash,crowdworks/redash,rockwotj/redash,EverlyWell/redash,denisov-vlad/redash,44px/redash,denisov-vlad/redash,vishesh92/redash,chriszs/redash,hudl/redash,moritz9/redash,crowdworks/redash,getredash/redash,EverlyWell/redash,44px/redash,moritz9/redash,getredash/redash,alexanderlz/redash,useabode/redash,chriszs/redash,getredash/redash,moritz9/redash,44px/redash,useabode/redash,denisov-vlad/redash,useabode/redash,vishesh92/redash,denisov-vlad/redash,44px/redash,rockwotj/redash,EverlyWell/redash,getredash/redash,rockwotj/redash,alexanderlz/redash,useabode/redash