Corrected invalid link of documentaion index page (#106).
Corrected invalid link of documentaion index page (#106).

ashigeru/asakusafw,asakusafw/asakusafw,asakusafw/asakusafw,akirakw/asakusafw,cocoatomo/asakusafw,ashigeru/asakusafw,akirakw/asakusafw,cocoatomo/asakusafw