feat: used semantic-release/exec to clean changelog headings (#109)

* feat: used semantic-release/exec to clean changelog headings

* cspell.json > ignore CHANGELOG.md

* Corrected exec prepare

* cat CHANGELOG.md

* Disable no-duplicate-heading

Author: JoshuaKGoldberg

Diff for: .github/workflows/release.yml

@@ -19,3 +19,4 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
         run: npx semantic-release
+      - run: cat CHANGELOG.md

Diff for: .releaserc.json

@@ -10,6 +10,12 @@
 				"changelogTitle": "# Changelog"
 			}
 		],
+		[
+			"@semantic-release/exec",
+			{
+				"prepare": "sed -i 's/# \\[/## \\[/g' CHANGELOG.md"
+			}
+		],
 		"@semantic-release/github",
 		"@semantic-release/npm",
 		[

Diff for: CHANGELOG.md

@@ -1,18 +1,20 @@
+<!-- markdownlint-disable no-duplicate-heading -->
+
 # Changelog
 
-# [1.6.0](https://github.com/JoshuaKGoldberg/template-typescript-package/compare/v1.5.0...v1.6.0) (2022-12-13)
+## [1.6.0](https://github.com/JoshuaKGoldberg/template-typescript-package/compare/v1.5.0...v1.6.0) (2022-12-13)
 
 ### Features
 
 - change GHANGELOG.md title to include hash ([297eb4e](https://github.com/JoshuaKGoldberg/template-typescript-package/commit/297eb4edf9187d7f38d03e3be2daf169f05fe8a4))
 
-# [1.5.0](https://github.com/JoshuaKGoldberg/template-typescript-package/compare/v1.4.0...v1.5.0) (2022-12-13)
+## [1.5.0](https://github.com/JoshuaKGoldberg/template-typescript-package/compare/v1.4.0...v1.5.0) (2022-12-13)
 
 ### Features
 
 - add test entry to CHANGELOG.md ([c39b3db](https://github.com/JoshuaKGoldberg/template-typescript-package/commit/c39b3db1ad2bf8cd9eb2939ac1d3bba848a2f3d5))
 
-# [1.4.0](https://github.com/JoshuaKGoldberg/template-typescript-package/compare/v1.3.0...v1.4.0) (2022-12-13)
+## [1.4.0](https://github.com/JoshuaKGoldberg/template-typescript-package/compare/v1.3.0...v1.4.0) (2022-12-13)
 
 ### Features
 

Diff for: cspell.json

@@ -2,6 +2,7 @@
 	"dictionaries": ["typescript"],
 	"ignorePaths": [
 		".github",
+		"CHANGELOG.md",
 		"lib",
 		"node_modules",
 		"pnpm-lock.yaml",

Diff for: package.json

@@ -4,6 +4,7 @@
 	"devDependencies": {
 		"@semantic-release/changelog": "^6.0.1",
 		"@semantic-release/commit-analyzer": "^9.0.2",
+		"@semantic-release/exec": "^6.0.3",
 		"@semantic-release/git": "^10.0.1",
 		"@semantic-release/github": "^8.0.6",
 		"@semantic-release/npm": "^9.0.1",