Copy/paste footprints in Javadoc

[vizotov]

1. JavaDoc for class org.cactoos.collection.Shuffled contains description from class Sorted:

public final class Shuffled<T>
extends CollectionEnvelope<T>
Sorted collection.
Pay attention that sorting will happen...

2. Interface Output contains wrong return type and description in the method Javadoc:

/**
     * Get write access to it.
     * @return InputStream to read from
     * @throws Exception If something goes wrong
     */
OutputStream stream() throws Exception;

[0crat]

@llorllale/z please, pay attention to this issue

[0crat]

@vizotov/z this project will fix the problem faster if you donate a few dollars to it; just click here and pay via Stripe, it's very fast, convenient and appreciated; thanks a lot!

[llorllale]

@vizotov see a2a51f4. Is that better?

[vizotov]

@llorllale, yes.

[0crat]

Job gh:yegor256/cactoos#937 is not assigned, can't get performer

[0crat]

The job is not in WBS, won't close the order