6561353: The text for J2SE NervousText demo should be updated to 7.0

Reviewed-by: art

src/share/demo/applets/NervousText/example1.html

 <title>Nervous Text 1.1</title>
 <hr>
 <applet code="NervousText.class" width=534 height=50>
-<param name=text value="Java^T^M 2 SDK, Standard Edition 6.0">
+<param name=text value="Java SE Development Kit (JDK) 7.0">
 </applet>
 <hr>
 <a href="NervousText.java">The source.</a>