Fix md documents typo

Author: uru

docs/config.md

@@ -1,7 +1,7 @@
 ## Documents
 
   1. [Installation](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/installation.md)
-  1. [Intergration](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/integration.md)
+  1. [Integration](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/integration.md)
   1. [Config](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/config.md)
   1. [Customization](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/customization.md)
   1. [Events](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/events.md)

docs/customization.md

@@ -1,7 +1,7 @@
 ## Documents
 
   1. [Installation](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/installation.md)
-  1. [Intergration](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/integration.md)
+  1. [Integration](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/integration.md)
   1. [Config](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/config.md)
   1. [Customization](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/customization.md)
   1. [Events](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/events.md)

docs/events.md

@@ -1,7 +1,7 @@
 ## Documents
 
   1. [Installation](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/installation.md)
-  1. [Intergration](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/integration.md)
+  1. [Integration](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/integration.md)
   1. [Config](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/config.md)
   1. [Customization](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/customization.md)
   1. [Events](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/events.md)

docs/installation.md

@@ -1,7 +1,7 @@
 ## Documents
 
   1. [Installation](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/installation.md)
-  1. [Intergration](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/integration.md)
+  1. [Integration](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/integration.md)
   1. [Config](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/config.md)
   1. [Customization](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/customization.md)
   1. [Events](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/events.md)

docs/upgrade.md

@@ -1,7 +1,7 @@
 ## Documents
 
   1. [Installation](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/installation.md)
-  1. [Intergration](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/integration.md)
+  1. [Integration](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/integration.md)
   1. [Config](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/config.md)
   1. [Customization](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/customization.md)
   1. [Events](https://github.com/UniSharp/laravel-filemanager/blob/master/docs/events.md)