Fix CHANGELOG formatting

Author: mburtless

CHANGELOG.md

@@ -2,6 +2,7 @@
 ENHANCEMENTS:
 * Add more verbose logging output for failed requests [#160](https://github.com/ns1-terraform/terraform-provider-ns1/pull/160)
 * Update to documentation to reflect proper usage for monitoring datafeeds [#154](https://github.com/ns1-terraform/terraform-provider-ns1/pull/154) 
+
 BUG FIXES:
 * Correctly coerce `test_id` config value for datafeed resource used with `thousandeyes` `datasource` [#163](https://github.com/ns1-terraform/terraform-provider-ns1/pull/163)
 * Change `notify_failback` field in `monitoringjob` resource default to `true` to match default in api [#161](https://github.com/ns1-terraform/terraform-provider-ns1/pull/161)