[Instant] mention package type in TITLE

Author: moritz

lib/Instant.pod

@@ -1,6 +1,6 @@
 =begin pod
 
-=TITLE Instant
+=TITLE class Instant
 
     class Instant is Cool does Real { }
 
@@ -16,4 +16,4 @@ C<Instant> to a C<Duration> returns another Instant. Subtracting two C<Instant>s
 will yield a C<Duration>. Adding two C<Instant>s is explicitly disallowed. All
 other operations with Instants are undefined.
 
-=end pod
+=end pod