Correct a broken code block in the readme
treee932201983bb722c971efd0365a6a0ed125d4325
drwxr-xr-x - .github
-rw-r--r-- 470 .gitignore
-rw-r--r-- 0 .gitmodules
-rw-r--r-- 1806 3rdparty.txt
-rw-r--r-- 1565 LICENSE.txt
-rw-r--r-- 9551 README.md
drwxr-xr-x - assets
drwxr-xr-x - docs
-rw-r--r-- 1188 dub.json
drwxr-xr-x - src
-rw-r--r-- 1185 thanks.txt