Fix env var docs

doc/03-cli.md

@@ -900,7 +900,7 @@ repository options.
 
 ### COMPOSER_HTACCESS_PROTECT
 
-Defaults to `true`. If set to `false`, Composer will not create `.htaccess` files in the
+Defaults to `1`. If set to `0`, Composer will not create `.htaccess` files in the
 composer home, cache, and data directories.
 
 ← [Libraries](02-libraries.md)  |  [Schema](04-schema.md) →