Updates changelog for SLOs

Author: pgupta-sumo

CHANGELOG.md

@@ -3,10 +3,13 @@ FEATURES:
 * **New Resource:** sumologic_cse_first_seen_rule (GH-476)
 * **New Resource:** sumologic_cse_automation (GH-467)
 * Add new optional `min_data_points` field to metrics monitor trigger_conditions (GH-464)
+* Added support to manage monitor based SLOs (GH-480)
 
 BUG FIXES:
 * Added validations to fail if no trigger conditions defined in monitor resource (GH-463)
 * Fixed validation on connection name to match with UI/API (GH-478)
+* Corrected SLO examples in the SLO terraform documentation (GH-481)
+* Fixed Sumo help docs link in SLO documentation (GH-481)
 
 ## 2.20.0 (December 15, 2022)
 FEATURES: