Clarify tap issues should not be reported to Homebrew.

Instead, direct people to the actual tap.

Library/Homebrew/brew.rb

@@ -160,7 +160,7 @@ rescue Exception => e # rubocop:disable Lint/RescueException
   onoe e
   if internal_cmd && defined?(OS::ISSUES_URL) &&
      !ENV["HOMEBREW_NO_AUTO_UPDATE"]
-    $stderr.puts "#{Tty.bold}Please report this bug:#{Tty.reset}"
+    $stderr.puts "#{Tty.bold}Please report this issue:#{Tty.reset}"
     $stderr.puts "  #{Formatter.url(OS::ISSUES_URL)}"
   end
   $stderr.puts e.backtrace

Library/Homebrew/formula_installer.rb

@@ -368,7 +368,7 @@ class FormulaInstaller
 
       raise if ARGV.homebrew_developer?
 
-      $stderr.puts "Please report this to the #{formula.tap} tap!"
+      $stderr.puts "Please report this issue to the #{formula.tap} tap (not Homebrew/brew or Homebrew/core)!"
       false
     else # rubocop:disable Layout/ElseAlignment
       f.linked_keg.exist? && f.opt_prefix.exist?

Library/Homebrew/utils.rb

@@ -167,7 +167,7 @@ module Kernel
       next unless match = line.match(HOMEBREW_TAP_PATH_REGEX)
 
       tap = Tap.fetch(match[:user], match[:repo])
-      tap_message = +"\nPlease report this to the #{tap} tap"
+      tap_message = +"\nPlease report this issue to the #{tap} tap (not Homebrew/brew or Homebrew/core)"
       tap_message += ", or even better, submit a PR to fix it" if replacement
       tap_message << ":\n  #{line.sub(/^(.*\:\d+)\:.*$/, '\1')}\n\n"
       break