adjusting variable names, fixing errors

tasks/pkgs/starship.yml

@@ -1,6 +1,18 @@
 # vim: set filetype=yaml.ansible :
+#
+## Package: starship
+## Description: fancy and useful shell prompt
+## Version: latest
+## Methods: source
+## Helpers: cargo
 ---
-- name: Add starship
+- name: Set starship default config
+  ansible.builtin.set_fact:
+    starship:
+      install_methods:
+        - source
+
+- name: Configure starship
   when:
     - "'starship' not in __configured"
   block: