incorrect doc description of fielded query syntax [LUCENE-1765]

http://lucene.apache.org/java/2_4_1/queryparsersyntax.html#Fields says:

You can search any field by typing the field name followed by a colon ":" and then the term you are looking for.

This is slightly incomplete since the stuff after the fieldname can be a more complex query, not necessarily a term. For example,

title:(do it right)

seems to work when I tried it. It would be good if the doc was updated to describe the syntax exactly.

Also, "documentation" should be one of the components selectable in bug reports.

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Migrated from [LUCENE-1765](https://issues.apache.org/jira/browse/LUCENE-1765) by solrize, updated Nov 30 2013
Environment:
```
lucene.apache.org docs
```

Start with the linked Query Parser Syntax documentation at the Fields section and verify the example title:(do it right) against the described fielded-query syntax. Done means the documentation accurately describes that the value after a field name may be a complex query, and documentation is available as a bug-report component.

Written by the indexing model from the issue text.