[libsigcplusplus] signal.h: Correct some strange comment formatting.

[Murray Cumming <murrayc src gnome org>]

commit 69bb8cffe8d286e6c53a05e758af2a5d4dd6882e
Author: Murray Cumming <murrayc murrayc com>
Date:   Thu Jul 6 13:03:57 2017 +0200

    signal.h: Correct some strange comment formatting.

 sigc++/signal.h |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/sigc++/signal.h b/sigc++/signal.h
index c666617..3403e57 100644
--- a/sigc++/signal.h
+++ b/sigc++/signal.h
@@ -359,8 +359,8 @@ private:
 
 public:
 
-  /** Executes a list of slots using an accumulator of type @e T_accumulator.   * The arguments are
-   * passed directly on to the slots.
+  /** Executes a list of slots using an accumulator of type @e T_accumulator.
+   * The arguments are passed directly on to the slots.
    * @param a Arguments to be passed on to the slots.
    */
   static decltype(auto) emit(const std::shared_ptr<internal::signal_impl>& impl, type_trait_take_t<T_arg>... 
a)
@@ -398,7 +398,8 @@ public:
  *
  * The following template arguments are used:
  * - @e T_return The desired return type for the emit() function (may be overridden by the
- * accumulator). * - @e T_arg Argument types used in the definition of emit().
+ * accumulator).
+ * - @e T_arg Argument types used in the definition of emit().
  * - @e T_accumulator The accumulator type used for emission. The default
  * @p void means that no accumulator should be used, for example if signal
  * emission returns the return value of the last slot invoked.