Update example forms

Signed-off-by: Pekka Helenius <fincer89@hotmail.com>

bookstore/src/main/resources/messages.properties

@@ -17,12 +17,12 @@ book.desc.set.year      = Set book publication year
 book.desc.set.price     = Set book price
 book.desc.set.category  = Select appropriate category
 
-book.desc.example.headertext = Valid inputs
+book.desc.example.headertext = Valid inputs (examples)
 book.desc.example.author     = Andrzej Sapkowski
 book.desc.example.title      = The Witcher\:\ The Lady of the Lake
 book.desc.example.isbn       = 1212121-3 or 4545454-67 or 6767676-890
-book.desc.example.year       = 1914
-book.desc.example.price      = 45.67
+book.desc.example.year       = 1854 or 2005
+book.desc.example.price      = 17 or 123.5 or 45.67
                         
 book.error.author       = Invalid author name
 book.error.title        = Invalid title