bugfix: rename method to match implementation

The object was renamed and the change didn't
propogate.

Change-Id: Ia4868b426ab187187a05bd0047ac8c7a98aa984b
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/phosphor-logging/sdjournal.hpp b/phosphor-logging/sdjournal.hpp
index 6aa2394..78820fb 100644
--- a/phosphor-logging/sdjournal.hpp
+++ b/phosphor-logging/sdjournal.hpp
@@ -66,7 +66,7 @@
  * @param[in] with - pointer to your sdjournal_mock object.
  * @return pointer to the previously stored sdjournal_ptr.
  */
-SdJournalHandler* SwapJouralImpl(SdJournalHandler* with);
+SdJournalHandler* SwapJouralHandler(SdJournalHandler* with);
 
 } // namespace logging
 } // namespace phosphor