hello uses fdl.texi, not gpl.texi

[Karl Berry]

Some time ago I changed hello.texi to not @cinlude gpl.texi any more.
May as well fix the example in the Automake manual.  Diff below.

--- /tmp/ORIG/automake.texi     2010-02-25 00:22:09.000000000 -0800
+++ /tmp/automake.texi  2010-03-06 15:15:17.000000000 -0800
@@ -7743,3 +7743,3 @@
 file.  For instance, in GNU Hello, @file{hello.texi} includes the file
address@hidden  You can tell Automake about these dependencies using
address@hidden  You can tell Automake about these dependencies using
 the @address@hidden variable.  Here is how GNU Hello does it:
@@ -7750,3 +7750,3 @@
 info_TEXINFOS = hello.texi
-hello_TEXINFOS = gpl.texi
+hello_TEXINFOS = fdl.texi
 @end example

Diff finished at Sat Mar  6 15:15:26