fix(cli): cdk bootstrap --help does not show some options

Signed-off-by: Vinayak Kukreja <vinakuk@amazon.com>

packages/aws-cdk/lib/cli.ts

@@ -97,8 +97,8 @@ async function parseCommandLineArguments(args: string[]) {
     .command('bootstrap [ENVIRONMENTS..]', 'Deploys the CDK toolkit stack into an AWS environment', (yargs: Argv) => yargs
       .option('bootstrap-bucket-name', { type: 'string', alias: ['b', 'toolkit-bucket-name'], desc: 'The name of the CDK toolkit bucket; bucket will be created and must not exist', default: undefined })
       .option('bootstrap-kms-key-id', { type: 'string', desc: 'AWS KMS master key ID used for the SSE-KMS encryption', default: undefined, conflicts: 'bootstrap-customer-key' })
-      .option('example-permissions-boundary', { type: 'boolean', alias: ['epb', 'example-permissions-boundary'], desc: 'Use the example permissions boundary.', default: undefined, conflicts: 'custom-permissions-boundary' })
-      .option('custom-permissions-boundary', { type: 'string', alias: ['cpb', 'custom-permissions-boundary'], desc: 'Use the permissions boundary specified by name.', default: undefined, conflicts: 'example-permissions-boundary' })
+      .option('example-permissions-boundary', { type: 'boolean', alias: 'epb', desc: 'Use the example permissions boundary.', default: undefined, conflicts: 'custom-permissions-boundary' })
+      .option('custom-permissions-boundary', { type: 'string', alias: 'cpb', desc: 'Use the permissions boundary specified by name.', default: undefined, conflicts: 'example-permissions-boundary' })
       .option('bootstrap-customer-key', { type: 'boolean', desc: 'Create a Customer Master Key (CMK) for the bootstrap bucket (you will be charged but can customize permissions, modern bootstrapping only)', default: undefined, conflicts: 'bootstrap-kms-key-id' })
       .option('qualifier', { type: 'string', desc: 'String which must be unique for each bootstrap stack. You must configure it on your CDK app if you change this from the default.', default: undefined })
       .option('public-access-block-configuration', { type: 'boolean', desc: 'Block public access configuration on CDK toolkit bucket (enabled by default) ', default: undefined })