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/sqlite/index.ts

@@ -198,7 +198,7 @@ export class SQLite extends IonicNativePlugin {
   @CordovaCheck()
   create(config: SQLiteDatabaseConfig): Promise<SQLiteObject> {
     return new Promise((resolve, reject) => {
-        sqlitePlugin.openDatabase(config, db => resolve(new SQLiteObject(db)), reject);
+      sqlitePlugin.openDatabase(config, db => resolve(new SQLiteObject(db)), reject);
     });
   }