Removed extra "the" from sentence.

src/docs/asciidoc/jme3/build_jme3_sources_with_netbeans.adoc

@@ -75,8 +75,8 @@ To update *your fork* on GitHub:
 .  Click the btn:[Head Fork] button and from the drop down list select "`jMonkeyEngine/jmonkeyengine`".
 .  Click the green button btn:[Create pull request].
 .  Give a succinct and informative title, in the comment field give a short explanation of the changes and click the green button btn:[Create pull request] again.
-.  Select the the btn:[Commit And Merge] button.
-.  Press the btn:[Commit And Merge] button again to confirm your choice.  
+.  Select the btn:[Commit And Merge] button.
+.  Press the btn:[Commit And Merge] button again to confirm your choice.
 
 To submit changes to the jMonkeyEngine repository after pushing them to *your fork*: