Doc: when adding Qt versions, qmake folder is selected first

Changed the text to describe the process more accurately.

Change-Id: I7ea9eba2b1b70ea764895beb4401a287644e8f45
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

doc/src/projects/creator-projects-qt-versions.qdoc

@@ -55,14 +55,14 @@
 
                 \image qtcreator-qt4-qtversions-add.png
 
-            \li In the \gui{Version name} field, edit the name that \QC
-                suggests for the Qt version.
-
-            \li In the \gui{qmake location} field, enter the path to the
-                directory where the qmake executable is located.
+            \li Select the directory where the qmake executable is located.
 
                 \QC automatically determines the path to the binaries in
-                the Qt installation and displays it in the dialog.
+                the Qt installation and displays it in the \gui{qmake location}
+                field.
+
+            \li In the \gui{Version name} field, edit the name that \QC
+                suggests for the Qt version.
 
             \li In the \gui Helpers section, you can build the debugging
                 helpers that are available for the Qt version. This is