Renamed --eager to --lazy=false

Signed-off-by: Fritz Duchardt <[email protected]>
Signed-off-by: ashpect <[email protected]>

proposals/vendir/001-lazy-synching-on-stable-config/README.md

@@ -55,7 +55,7 @@ Config digests are only added, if vendir is run with the `lazy` setting.
 
 To force a sync despite the `lazy` setting, a new option is added to the vendir binary, e.g.
 ```
-vendir sync --eager
+vendir sync --lazy=false
 ```
 
 ### Other Approaches Considered