Users with sufficient reputation can are encouraged to propose and create that synonym here: https://serverfault.com/tags/datastax-enterprise/synonyms and it will pop-up in the review queues, allowing the community to decide.
Merge Results updating post history, 12 rows affected (pipe delimited) updating posts, 12 rows affected (pipe delimited) updating PostTags associations, 6 rows affected updating Documentation tag proposal commitments, 0 rows affected removing/renaming old tag, 0 rows affected updating count for master tag, 1 rows affected tag remapping of [datastax-enterprise] and [datastax] complete! remapping 0 synonyms 2 favorite and ignored tags remapped! 0 tracked tag badges were remapped! Tag Synonym datastax -> datastax-enterprise was approved!