Fix documentation

Author: Crited

README.md

@@ -2,11 +2,11 @@
 
 This repository provides a collection of Windows check Plugins for the [Icinga PowerShell Framework](https://github.com/Icinga/icinga-powershell-framework)
 
-Before you continue, please take a look on the [installation guide](doc/02-Installation.md)
+Before you continue, please take a look at the [installation guide](doc/02-Installation.md)
 
 ## Documentation
 
-Please take a look on the following content to get to know the possibilities of the module including examples on how to use it.
+Please take a look at the following content to get to know the extent of the module including examples on how to use it.
 
 * [Introduction](doc/01-Introduction.md)
 * [Installation Guide](doc/02-Installation.md)
@@ -19,4 +19,4 @@ The Icinga Windows Module is an Open Source project and lives from your contribu
 
 * Please check whether a related issue already exists on our [Issue Tracker](https://github.com/Icinga/icinga-powershell-plugins/issues)
 * Send a [Pull Request](https://github.com/Icinga/icinga-powershell-plugins/pulls)
-* The master branche shall never be corrupt!
+* The master branch shall never be corrupt!

doc/01-Introduction.md

@@ -4,4 +4,4 @@ This repository provides a wide range of check plugins for the Open Source monit
 
 This repository will be extended whenever there are new plugins available. The separation will ensure updates of plugins are possible without having to upgrade huge elements of the PowerShell Framework itself.
 
-Please have a look on the [Installation Guide](doc/02-Installation.md) to get started.
+Please have a look at the [Installation Guide](doc/02-Installation.md) to get started.