New translations en.json (Polish)

i18n/pl.json

@@ -164,7 +164,7 @@
     "EiB": "EiB",
     "ZiB": "ZiB",
     "YiB": "YiB",
-    "KB": "KB",
+    "kB": "kB",
     "MB": "MB",
     "GB": "GB",
     "TB": "TB",