Update perlsub to reflect attribute/signature relo

As initially introduced in 5.20, sub signatures came after
attributes.  For 5.22, they will come before attributes, like
prototypes did.  This commit updates the docs to that effect.

1 files changed, 3 insertions, 4 deletions

diff --git a/pod/perlsub.pod b/pod/perlsub.pod
index 75d92aa2e4..a6d000de1e 100644
--- a/pod/perlsub.pod
+++ b/pod/perlsub.pod
@@ -489,13 +489,12 @@ a signature.  They do different jobs: the prototype affects compilation
 of calls to the subroutine, and the signature puts argument values into
 lexical variables at runtime.  You can therefore write
 
-    sub foo :prototype($$) ($left, $right) {
+    sub foo ($left, $right) : prototype($$) {
 	return $left + $right;
     }
 
-The prototype attribute, and any other attributes, must come before
-the signature.  The signature always immediately precedes the block of
-the subroutine's body.
+The prototype attribute, and any other attributes, come after 
+the signature.
 
 =head2 Private Variables via my()
 X<my> X<variable, lexical> X<lexical> X<lexical variable> X<scope, lexical>