Replace "Fixes"/"Fixed" in commit logs as well as vcs.rb [ci skip]

Use the same regexp to replace "(#NNNN)" and "GH-NNNN" style
references in vcs.rb, too.

tool/lib/vcs.rb

@@ -659,7 +659,7 @@ class VCS
 
             if %r[^ +(https://github\.com/[^/]+/[^/]+/)commit/\h+\n(?=(?: +\n(?i: +Co-authored-by: .*\n)+)?(?:\n|\Z))] =~ s
               issue = "#{$1}pull/"
-              s.gsub!(/\b[Ff]ix(?:e[sd])? \K#(?=\d+)/) {issue}
+              s.gsub!(/\b(?:(?i:fix(?:e[sd])?) +|GH-)\K#(?=\d+\b)|\(\K#(?=\d+\))/) {issue}
             end
 
             s.gsub!(/ +\n/, "\n")

tool/sync_default_gems.rb

@@ -397,7 +397,7 @@ def message_filter(repo, sha)
   log = STDIN.read
   log.delete!("\r")
   url = "https://github.com/#{repo}"
-  print "[#{repo}] ", log.gsub(/\b(?i:fix) +\K#(?=\d+\b)|\(\K#(?=\d+\))|\bGH-(?=\d+\b)/) {
+  print "[#{repo}] ", log.gsub(/\b(?:(?i:fix(?:e[sd])?) +|GH-)\K#(?=\d+\b)|\(\K#(?=\d+\))/) {
     "#{url}/pull/"
   }.gsub(%r{(?<![-\[\](){}\w@/])(?:(\w+(?:-\w+)*/\w+(?:-\w+)*)@)?(\h{10,40})\b}) {|c|
     "https://github.com/#{$1 || repo}/commit/#{$2[0,12]}"