[libsigc++2] Small whitespace changes in docs comment.

[Murray Cumming <murrayc src gnome org>]

commit 9fe5e0126932aad241e601d9a04a4fbd04f9d7bf
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Nov 6 09:22:26 2015 +0100

    Small whitespace changes in docs comment.

 sigc++/functors/slot_base.h |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/sigc++/functors/slot_base.h b/sigc++/functors/slot_base.h
index c33733d..89a26b0 100644
--- a/sigc++/functors/slot_base.h
+++ b/sigc++/functors/slot_base.h
@@ -35,8 +35,9 @@ typedef void* (*hook)(void*);
  * between a slot and the functor that the slot should
  * execute in operator(). This link is needed because in
  * libsigc++2 the slot doesn't necessarily have exactly the
- * same function signature as the functor thus allowing for
+ * same function signature as the functor, thus allowing for
  * implicit conversions.
+ *
  * The base class slot_rep serves the purpose to
  * - form a common pointer type (slot_rep*),
  * - offer the possibility to create duplicates (dup()),
@@ -47,6 +48,7 @@ typedef void* (*hook)(void*);
  *      (set_parent()) that is executed from notify(),
  *   -# a generic function pointer, call_, that is simply
  *      set to zero in notify() to invalidate the slot.
+ *
  * slot_rep inherits trackable so that connection objects can
  * refer to the slot and are notified when the slot is destroyed.
  */