chore: remove duplicate changelog header

Author: ghiscoding

.release-it.json

@@ -18,7 +18,7 @@
   },
   "plugins": {
     "@release-it/conventional-changelog": {
-      "header": "# Change Log \n\nAll notable changes to this project will be documented in this file. See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.",
+      "header": "# Change Log\nAll notable changes to this project will be documented in this file. See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.",
       "preset": "angular",
       "ignoreRecommendedBump": true,
       "infile": "CHANGELOG.md"

CHANGELOG.md

@@ -1,12 +1,9 @@
-# Change Log 
+# Change Log
 
 All notable changes to this project will be documented in this file. See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
 # [5.0.0](https://github.com/ghiscoding/angular-slickgrid/compare/v5.0.0-alpha.0...v5.0.0) (2022-10-17)
 
-# Change Log 
-
-All notable changes to this project will be documented in this file. See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
 # [5.0.0-alpha.0](https://github.com/ghiscoding/angular-slickgrid/compare/v4.3.1...v5.0.0-alpha.0) (2022-10-15)