chore: rename heading in README

Author: timoknapp

README.md

@@ -21,9 +21,9 @@ The changelog generator will order the types of commits in the changelog in the
 - Build
 - CI
 
-## Prettified changelogs
+## Emoji changelogs
 
-In order to use prettified changelogs including a prefixed emoji, you need to provide the following config when calling semantic-relase: `--changelog-generator-opt "emojis=true"`. Or add the config within your `.semrelrc` file.
+In order to use emoji changelogs including a prefixed emoji, you need to provide the following config when calling semantic-relase: `--changelog-generator-opt "emojis=true"`. Or add the config within your `.semrelrc` file.
 
 [Example Change Log](./examples/GENERATED_CHANGELOG.md)