GetSpace plugin: fix docs
GetSpace plugin: fix docs

* Add missing close-triple-quotes
* Add braces around the object's fields

[finishes #170196437]

Authored-by: Eric Promislow <6c389fa4d719bbeec88fea52ca3b2497804923ad@suse.com>

cloudfoundry/cli,cloudfoundry/cli,cloudfoundry/cli