rearrange output to easily copy command suggestion

Library/Homebrew/dev-cmd/cat.rb

@@ -53,8 +53,8 @@ module Homebrew
     end
 
     if Homebrew.failed?
-      $stderr.puts "The name may be wrong, or the tap hasn't been tapped."
-      $stderr.puts "Consider using `brew info --github #{args.named.join(" ")}` instead."
+      $stderr.puts "The name may be wrong, or the tap hasn't been tapped. Instead try:"
+      $stderr.puts "  brew info --github #{args.named.join(" ")}"
       return
     end
 

Library/Homebrew/test/dev-cmd/cat_spec.rb

@@ -20,7 +20,7 @@ describe "brew cat" do
     it "prints a suggestion to use brew info --github" , :integration_test do
 
       expect  { brew "cat", "asdf", "bogus"}
-        .to output(/Consider using `brew info --github asdf bogus` instead/).to_stderr
+        .to output(/brew info --github asdf bogus/).to_stderr
         .and be_a_failure
     end
   end