Remove misspelled comment in tst_qtextdocument.cpp

The comment was copy-pasted, spelling error and all, from the example
in the bug report, and really doesn't make any sense at all in this
context.

Reviewed-by: TrustMe
(cherry picked from commit 7ac511d8d906575dff1a02361e31251b244d3b3a)

tests/auto/qtextdocument/tst_qtextdocument.cpp

@@ -2742,7 +2742,7 @@ void tst_QTextDocument::copiedFontSize()
     QTextDocument documentOutput;
 
     QFont fontInput;
-    fontInput.setPixelSize(24);  // With pixels font size is not transfered in html
+    fontInput.setPixelSize(24);
 
     QTextCursor cursorInput(&documentInput);
     QTextCharFormat formatInput = cursorInput.charFormat();