feat(cli): add description when choosing a commit rule

commitizen/commands/init.py

@@ -11,7 +11,10 @@
 from commitizen.config.factory import create_config
 from commitizen.cz import registry
 from commitizen.defaults import CONFIG_FILES, DEFAULT_SETTINGS
-from commitizen.exceptions import InitFailedError, NoAnswersError
+from commitizen.exceptions import (
+    InitFailedError,
+    NoAnswersError,
+)
 from commitizen.git import get_latest_tag_name, get_tag_names, smart_open
 from commitizen.version_schemes import KNOWN_SCHEMES, Version, get_version_scheme
 
@@ -165,9 +168,25 @@ def _ask_config_path(self) -> Path:
         return Path(filename)
 
     def _ask_name(self) -> str:
+        def construct_choice_with_description(cz_name: str) -> questionary.Choice:
+            try:
+                cz_class = registry.get(cz_name)
+                if cz_class:
+                    cz_obj = cz_class(self.config)
+                    first_example = cz_obj.schema().partition("\n")[0]
+                    return questionary.Choice(
+                        title=cz_name, value=cz_name, description=f"{first_example}"
+                    )
+            except Exception:  # pylint: disable=broad-except
+                pass
+            return questionary.Choice(title=cz_name, value=cz_name)
+
         name: str = questionary.select(
             "Please choose a cz (commit rule): (default: cz_conventional_commits)",
-            choices=list(registry.keys()),
+            choices=[
+                construct_choice_with_description(cz_name)
+                for cz_name in registry.keys()
+            ],
             default="cz_conventional_commits",
             style=self.cz.style,
         ).unsafe_ask()