Easy-to-fix javadoc warning

[Jonathan Gibbons]

Someone in the core-libs team should look at fixing this trivial javadoc 
warning.

The replacement should presumably be  {@code httpServerProvider}

-- Jon


# Packages (httpserver.packages):
#   com.sun.net.httpserver
#   com.sun.net.httpserver.spi
/opt/jdk/1.7.0/bin/java -XX:-PrintVMOptions 
-XX:+UnlockDiagnosticVMOptions -XX:-LogVMOutput -client -Xmx612m 
-Xms512m -XX:PermSize=32m -XX:MaxPermSize=160m 
"-Xbootclasspath/p:/w/jjg/work/7144951-javadoc-issues/tl/build/linux-i586/langtools/dist/bootstrap/lib/javadoc.jar:/w/jjg/work/7144951-javadoc-issues/tl/build/linux-i586/langtools/dist/bootstrap/lib/javac.jar:/w/jjg/work/7144951-javadoc-issues/tl/build/linux-i586/langtools/dist/bootstrap/lib/doclets.jar" 
-jar 
/w/jjg/work/7144951-javadoc-issues/tl/build/linux-i586/langtools/dist/bootstrap/lib/javadoc.jar 
-bootclasspath 
/w/jjg/work/7144951-javadoc-issues/tl/build/linux-i586/classes  -d 
/w/jjg/work/7144951-javadoc-issues/tl/build/linux-i586/docs/jre/api/net/httpserver/spec 
\
       
@/w/jjg/work/7144951-javadoc-issues/tl/build/linux-i586/tmp/docs/doctmp/httpserver.options 
@/w/jjg/work/7144951-javadoc-issues/tl/build/linux-i586/tmp/docs/doctmp/httpserver.packages
*../../src/share/classes/com/sun/net/httpserver/spi/HttpServerProvider.java:81: 
warning - @code("httpServerProvider") is an unknown tag.*
1 warning