docs: typos

Author: MatteoGabriele

docs/opt-out.md

@@ -1,13 +1,13 @@
 ## Opt-out from Google Analytics
 
-It is possible to opt-out from Google Analytics by simpling setting the `disabled` to true.
+It is possible to opt-out from Google Analytics by simply setting the `disabled` property to true.
 The `disabled` property accepts also a function, a promise or a function that returns a promise, but it needs to return a boolean.
 
-Take in mind that when using a promise, the plug-in won't start tracking until is resolved, because the opt-out needs to happen before trackers or queues.
+Take in mind that when using a promise, the plug-in won't start tracking until it's resolved, because the opt-out needs to happen before trackers or queues are initialized.
 
 If you are using more then one domain name, all of them will be disabled from tracking.
 
-**if you need to disable tracking just for development, is better to use the `sendHitTask` property in the `debug` object. Read more here**
+**if you need to disable tracking just for development, is better to use the `sendHitTask` property in the `debug` object. Read more [here](/docs/turn-off-development.md)**
 
 ```js
 import Vue from 'vue'

docs/screen-tracking.md

@@ -47,4 +47,6 @@ Vue.use(VueAnalytics, {
     screenview: true
   }
 })
-```
+```
+
+**Route name property is mandatory**