Fix typo in CHANGELOG.md

Co-authored-by: Oliver Klee <github@oliverklee.de>

Author: JakeQZ

CHANGELOG.md

@@ -74,7 +74,7 @@ Please also have a look at our
 
 ### Fixed
 
-- Remove trailing semicolon from declatation blocks with 'compact'
+- Remove trailing semicolon from declaration blocks with 'compact'
   `OutputFormat` (#1345)
 - Parse selector functions (like `:not`) with comma-separated arguments (#1292)
 - Parse quoted attribute selector value containing comma (#1323)