git-bisect-lk2009: update java code conventions link

A reference to Java Code Conventions in git-bisect-lk2009.txt uses an
outdated URL that redirects to table of contents for the conventions.
The actual claim about "80%" that this reference backs up is on the
first page of the conventions:

  https://www.oracle.com/java/technologies/javase/codeconventions-introduction.html

Use this newer URL and its title in the reference.

Signed-off-by: Andrei Rybak <[email protected]>
Acked-by: Jeff King <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: rybak

Documentation/git-bisect-lk2009.txt

@@ -1348,7 +1348,7 @@ References
 ----------
 
 - [[[1]]] https://www.nist.gov/sites/default/files/documents/director/planning/report02-3.pdf['The Economic Impacts of Inadequate Infratructure for Software Testing'.  Nist Planning Report 02-3], see Executive Summary and Chapter 8.
-- [[[2]]] http://www.oracle.com/technetwork/java/codeconvtoc-136057.html['Code Conventions for the Java Programming Language'. Sun Microsystems.]
+- [[[2]]] https://www.oracle.com/java/technologies/javase/codeconventions-introduction.html['Code Conventions for the Java Programming Language: 1. Introduction'. Sun Microsystems.]
 - [[[3]]] https://en.wikipedia.org/wiki/Software_maintenance['Software maintenance'. Wikipedia.]
 - [[[4]]] https://lore.kernel.org/git/[email protected]/[Junio C Hamano. 'Automated bisect success story'.]
 - [[[5]]] https://lwn.net/Articles/317154/[Christian Couder. 'Fully automated bisecting with "git bisect run"'. LWN.net.]