Add "format"

README.md

@@ -28,6 +28,7 @@
 | doc [🔊](http://dict.youdao.com/dictvoice?audio=doc&type=1) | ✅ [dɒk]| ❌ [daʊk] |
 | facade [🔊](http://dict.youdao.com/dictvoice?audio=facade&type=1) | ✅ [fə'sɑːd]| ❌ ['feikeid] |
 | fedora [🔊](http://dict.youdao.com/dictvoice?audio=fedora&type=1) | ✅ [fɪ'dɔːrə]| ❌ ['fedərə] |
+| format [🔊](http://dict.youdao.com/dictvoice?audio=format&type=1) | ✅ ['fɔːmæt]| ❌ [fɔ'mæt] |
 | Git [🔊](http://dict.youdao.com/dictvoice?audio=git&type=1) | ✅ [ɡɪt] | ❌ [dʒɪt] |
 | GNU [🔊](https://upload.wikimedia.org/wikipedia/commons/2/24/En-gnu.ogg) | ✅ [gnu:] | |
 | GUI [🔊](http://dict.youdao.com/dictvoice?audio=GUI&type=1) | ✅ [ˈɡui] | |