Fix typo: mongodbatlast => mongodbatlas (#589)

Author: sonlexqt

CHANGELOG.md

@@ -344,7 +344,7 @@
 **Closed issues:**
 
 - Deleting a user from mongo atlas results in a 404 error, not that user getting re-created [\#360](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/360)
-- Replace "mongodbatlas\_project\_ip\_whitelist" resource/datasource/docs references with "mongodbatlast\_project\_ip\_accesslist" to reflect API/UI change. [\#358](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/358)
+- Replace "mongodbatlas\_project\_ip\_whitelist" resource/datasource/docs references with "mongodbatlas\_project\_ip\_accesslist" to reflect API/UI change. [\#358](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/358)
 - Quick start for provider is not quick and comes with side effect about `replication_factor` field [\#356](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/356)
 - mongodbatlas\_database\_user resource's id attribute does not have the username value [\#348](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/348)
 - Mongodbatlas documentation issue with Data Sources [\#347](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/347)