[cl-gd-devel] Typos on the cl-gd website.

In the "Contents" section, the hypertext links to the "make-tile" and "make-anti-aliased" both point to the same anchor in the page, which is "#make-tile". In the code example for "make-anti-aliased", the third argument to the `let' special form which is "red" is malformed such that the hypertext link to the `allocate-color' function is broken. -- "Cut your own wood and it will warm you twice"