Reference the discussion rather than the documentation for #873

src/Composer/DependencyResolver/SolverProblemsException.php

@@ -36,7 +36,7 @@ class SolverProblemsException extends \RuntimeException
         }
 
         if (strpos($text, 'could not be found') || strpos($text, 'no matching package found')) {
-            $text .= "\nPotential causes:\n - A typo in the package name\n - The package is not available in a stable-enough version according to your minimum-stability setting\n   see http://getcomposer.org/doc/04-schema.md#minimum-stability for more details.\n";
+            $text .= "\nPotential causes:\n - A typo in the package name\n - The package is not available in a stable-enough version according to your minimum-stability setting\n   see https://groups.google.com/d/topic/composer-dev/_g3ASeIFlrc/discussion for more details.\n";
         }
 
         return $text;