respond to review

Author: MarkvanMents

content/en/docs/refguide/java-programming/using-eclipse.md

@@ -27,7 +27,7 @@ In Mendix, all text is saved in UTF-8 encoding. To make sure your source code is
 
     {{< figure src="/attachments/refguide/java-programming/using-eclipse/eclipse-utf8-encoding.png" alt="Settings UTF-8 encoding" >}}
 
-You must also have a Java Development Kit (JDK) installed and selected. You will normally have the a JDK installed as part of your Studio Pro installation. Check that the JDK you want to use is listed under **Installed JREs** and select it as the default in Eclipse.
+You must also have a Java Development Kit (JDK) installed and selected. You will normally have a JDK installed as part of your Studio Pro installation. Check that the JDK you want to use is listed under **Installed JREs** and select it as the default in Eclipse.
 
 {{< figure src="/attachments/refguide/java-programming/using-eclipse/eclipse-jdk.png" alt="Selecting a default JDK" >}}