style(): unify docs and spacing (#1448)

* typo(barcode-scanner): fixe circle lint error

* typo(docs):  Unified the documentations

In some plugins the typescript markup was missing.
I also unified the console.log string from console.log("hello") to console.log('Hello') so any plugin page look the same.

src/@ionic-native/plugins/location-accuracy/index.ts

@@ -7,7 +7,7 @@ import { Plugin, Cordova, IonicNativePlugin } from '@ionic-native/core';
  * This Cordova/Phonegap plugin for Android and iOS to request enabling/changing of Location Services by triggering a native dialog from within the app, avoiding the need for the user to leave your app to change location settings manually.
  *
  * @usage
- * ```
+ * ```typescript
  * import { LocationAccuracy } from '@ionic-native/location-accuracy';
  *
  * constructor(private locationAccuracy: LocationAccuracy) { }