Move core/fpdfdoc/include to core/fpdfdoc

BUG=pdfium:611

Review-Url: https://codereview.chromium.org/2374383003
diff --git a/fpdfsdk/cpdfsdk_annothandlermgr.cpp b/fpdfsdk/cpdfsdk_annothandlermgr.cpp
index 75542d3..9dd5a4e 100644
--- a/fpdfsdk/cpdfsdk_annothandlermgr.cpp
+++ b/fpdfsdk/cpdfsdk_annothandlermgr.cpp
@@ -6,7 +6,7 @@
 
 #include "fpdfsdk/include/cpdfsdk_annothandlermgr.h"
 
-#include "core/fpdfdoc/include/cpdf_annot.h"
+#include "core/fpdfdoc/cpdf_annot.h"
 #include "fpdfsdk/include/cba_annotiterator.h"
 #include "fpdfsdk/include/cpdfsdk_annot.h"
 #include "fpdfsdk/include/cpdfsdk_baannot.h"