Fix: allow parameters such as name[].

* It's not necessary to do a regex, which breaks when the value is something like `foobar[]`. Note that this code still has a bug where having `foo` and `fooBar` will return a false positive.
* Support both `:desc` and `:description` for parameter descriptions, we don't abbreviate for other parameters, not sure why this one should be abbreviated (I for one have a large API where it's not).