Update CHANGELOG.md (#159)

Author: cbaker6

CHANGELOG.md

@@ -4,7 +4,7 @@
 [Full Changelog](https://github.com/parse-community/Parse-Swift/compare/1.8.1...main)
 * _Contributing to this repo? Add info about your change here to be included in the next release_
 
-### 1.8.0
+### 1.8.1
 [Full Changelog](https://github.com/parse-community/Parse-Swift/compare/1.8.0...1.8.1)
 
 __Improvements__