we have less and less vector refrences, let's switch the example to something more common

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@693997 13f79535-47bb-0310-9956-ffa450edef68

docs/demo.html

@@ -311,7 +311,7 @@ To <b>search the index</b> type:
 </pre>
 
 You'll be prompted for a query.  Type in a swear word and press the enter key.  You'll see that the
-Lucene developers are very well mannered and get no results. Now try entering the word "vector".
+Lucene developers are very well mannered and get no results. Now try entering the word "string".
 That should return a whole bunch of documents.  The results will page at every tenth result and ask
 you whether you want more results.
 </p>

docs/demo.pdf

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 <<
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@@ -267,5 +267,5 @@ trailer
 /Info 4 0 R
 >>
 startxref
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src/site/src/documentation/content/xdocs/demo.xml

@@ -61,7 +61,7 @@ To <b>search the index</b> type:
 </pre>
 
 You'll be prompted for a query.  Type in a swear word and press the enter key.  You'll see that the
-Lucene developers are very well mannered and get no results. Now try entering the word "vector".
+Lucene developers are very well mannered and get no results. Now try entering the word "string".
 That should return a whole bunch of documents.  The results will page at every tenth result and ask
 you whether you want more results.
 </p>