fix some pr feedbacks

ceo/cli/positions.py

@@ -24,7 +24,7 @@ def get():
 
 
 @positions.command(short_help='Update positions')
-def update(**kwargs):
+def set(**kwargs):
     click.echo('The positions will be updated:')
     print_colon_kv(kwargs.items())
     click.confirm('Do you want to continue?', abort=True)
@@ -37,7 +37,7 @@ def update(**kwargs):
 @component.provideHandler
 @component.adapter(IRegistered)
 def _handler(event):
-    global update
+    global set
 
     if not (IUtilityRegistration.providedBy(event.object) and IConfig.providedBy(event.object.component)):
         return
@@ -47,4 +47,5 @@ def _handler(event):
     required = cfg.get('positions_required')
 
     for pos in avail:
-        update = click.option(f'--{pos}', metavar='USER', required=(pos in required))(update)
+        r = pos in required
+        set = click.option(f'--{pos}', metavar='USERNAME', required=r, prompt=r)(set)