RFR: JDK-8044206: LambdaMetafactory.altMetafactory javadoc refers to wrong method

[Alexander Zuev]

Hello,

  please, review my fix for the issue
JDK-8044206: LambdaMetafactory.altMetafactory javadoc refers to wrong 
method

  Link to the issue: https://bugs.openjdk.java.net/browse/JDK-8044206
  Webrev: http://cr.openjdk.java.net/~kizune/8044206/webrev.00

  The fix is trivial, the JavaDoc for the 
LambdaMetafactory.altMetafactory() stated that it's more advanced version
of the more streamlined method and linked itself instead of the method 
LambdaMetafactory.metafactory()

/Alex