docs(search): remove emojis

This should fix the search. There aren't emojis anywhere else, so having them removed is more consistant

Author: posva

Diff for: docs/en/essentials/passing-props.md

@@ -4,7 +4,7 @@ Using `$route` in your component creates a tight coupling with the route which l
 
 To decouple this component from the router use option `props`:
 
-**❌ Coupled to `$route`**
+**Instead of coupling to `$route`:**
 
 ``` js
 const User = {
@@ -17,7 +17,7 @@ const router = new VueRouter({
 })
 ```
 
-**👍 Decoupled with `props`**
+**Decouple it by using `props`**
 
 ``` js
 const User = {