Fix relative includes within core/

core/src/fpdfdoc/doc_vtmodule.cpp

Index: core/src/fpdfdoc/doc_vtmodule.cpp
diff --git a/core/src/fpdfdoc/doc_vtmodule.cpp b/core/src/fpdfdoc/doc_vtmodule.cpp
index 834d459de3f56e13c66e7aadbf982b9abc32a5b8..c67b9605c77470a660cc2b8fcad6a89d1ec4be07 100644
--- a/core/src/fpdfdoc/doc_vtmodule.cpp
+++ b/core/src/fpdfdoc/doc_vtmodule.cpp
@@ -4,9 +4,10 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
-#include "../../include/fpdfdoc/fpdf_doc.h"
-#include "../../include/fpdfdoc/fpdf_vt.h"
+#include "core/include/fpdfdoc/fpdf_doc.h"
+#include "core/include/fpdfdoc/fpdf_vt.h"
 #include "pdf_vt.h"
+
 IPDF_VariableText* IPDF_VariableText::NewVariableText() {
   return new CPDF_VariableText();
 }