Add commas to byte sizes in advanced demo.
Add commas to byte sizes in advanced demo.

addaleax/LZMA-JS,addaleax/LZMA-JS,addaleax/LZMA-JS,nmrugg/LZMA-JS,zzzhan/LZMA-JS,zzzhan/LZMA-JS,nmrugg/LZMA-JS,zzzhan/LZMA-JS,nmrugg/LZMA-JS