clean up progress option typo and options def

Author: shellscape

lib/Server.js

@@ -56,7 +56,7 @@ function Server(compiler, options) {
   if (this.progress) {
     const progressPlugin = new webpack.ProgressPlugin((percent, msg, addInfo) => {
       percent = Math.floor(percent * 100);
-      if (percent === 100) msg = 'Compilation competed';
+      if (percent === 100) msg = 'Compilation completed';
       if (addInfo) msg = `${msg} (${addInfo})`;
       this.sockWrite(this.sockets, 'progress-update', { percent, msg });
     });

lib/optionsSchema.json

@@ -99,11 +99,7 @@
     },
     "progress": {
       "description": "Shows compilation progress in browser console.",
-      "anyOf": [
-        {
-          "type": "boolean"
-        }
-      ]
+      "type": "boolean"
     },
     "key": {
       "description": "The contents of a SSL key.",