Some fixes to typos in documentation

[dokondr]

Hi,
Found some typos. In package description:
http://lucene.apache.org/core/4_0_0/core/org/apache/lucene/analysis/package-summary.html?is-external=true#package_description

In the example code bellow the following corrections are needed:

OffsetAttribute offsetAtt = addAttribute(OffsetAttribute.class);
*** Should be:
OffsetAttribute offsetAtt = ts.addAttribute(OffsetAttribute.class);

*** And:
   } finally {
      ts.close(); // Release resources associated with this stream.
    }
*** Should be:
   } finally {
analyzer.close();
      ts.close(); // Release resources associated with this stream.
    }


Example code:

    Version matchVersion = Version.LUCENE_XY; // Substitute desired
Lucene version for XY
    Analyzer analyzer = new StandardAnalyzer(matchVersion); // or any
other analyzer
    TokenStream ts = analyzer.tokenStream("myfield", new
StringReader("some text goes here"));
    OffsetAttribute offsetAtt = addAttribute(OffsetAttribute.class);

    try {
      ts.reset(); // Resets this stream to the beginning. (Required)
      while (ts.incrementToken()) {
        // Use AttributeSource.reflectAsString(boolean)
<http://lucene.apache.org/core/4_0_0/core/org/apache/lucene/util/AttributeSource.html#reflectAsString(boolean)>
        // for token stream debugging.
        System.out.println("token: " + ts.reflectAsString(true));

        System.out.println("token start offset: " + offsetAtt.startOffset());
        System.out.println("  token end offset: " + offsetAtt.endOffset());
      }
      ts.end();   // Perform end-of-stream operations, e.g. set the
final offset.
    } finally {
      ts.close(); // Release resources associated with this stream.
    }