more fixes to the textfinder example

doc/example/textfinder/textfinder.ui

 <?xml version="1.0" encoding="UTF-8"?>
 <ui version="4.0">
- <class>Form</class>
- <widget class="QWidget" name="Form">
+ <class>TextFinder</class>
+ <widget class="QWidget" name="TextFinder">
   <property name="geometry">
    <rect>
     <x>0</x>

doc/qtcreator.qdoc

@@ -531,9 +531,11 @@
     \image qtcreator-textfinder-ui.png
 
     Design the form above using a \l{http://doc.trolltech.com/qlabel.html}
-    {QLabel}, \l{http://doc.trolltech.com/qlinedit.html}{QLineEdit},
-    \l{http://doc.trolltech.com/qpushbutton.html}{QPushButton} and a
-    \l{http://doc.trolltech.com/qtextedit.html}{QTextEdit}. We recommend that
+    {QLabel}, \l{http://doc.trolltech.com/qlinedit.html}{QLineEdit} 
+    (named lineEdit), \l{http://doc.trolltech.com/qpushbutton.html}{QPushButton}
+    (named findButton), and a
+    \l{http://doc.trolltech.com/qtextedit.html}{QTextEdit} (named textEdit).
+    We recommend that
     you use a QGridLayout to lay out the
     \l{http://doc.trolltech.com/qlabel.html}{QLabel},
     \l{http://doc.trolltech.com/qlinedit.html}{QLineEdit} and