[wwwdocs] Link to guide to testcase reduction from minimise.html

[Gerald Pfeifer]

Hi Manuel,

On Sun, 7 Mar 2010, Manuel López-Ibáñez wrote:
> PING http://gcc.gnu.org/ml/gcc-patches/2010-02/msg01261.html

small typo: "methos" -> "methods" and "<p> " -> "<p>".

Looks good, thanks!

Gerald