fix dox warnings

src/core/composite-trace-resolver.h

@@ -95,7 +95,7 @@ public:
   /**
    * \param name the name of the array
    * \param begin an iterator which points to the first element of the array
-   * \param begin an iterator which points to the last element of the array
+   * \param end an iterator which points to the last element of the array
    * \param index an object which can store the index of an element in the
    *        array. In practice, this object should support a constructor
    *        whose single argument is an array index.

src/core/trace-source.h

@@ -36,7 +36,7 @@ public:
   virtual ~TraceSource () {}
   /**
    * \param callback the callback to connect to this trace source
-   * \param the context associated to the input callback which should be passed
+   * \param context the context associated to the input callback which should be passed
    *        back to the user.
    */
   virtual void AddCallback (CallbackBase const & callback, TraceContext const & context) = 0;