Change the way to include header (#2795)
`#include <source/util/string_utils.h>` works only when we specify
`include_directories(${CMAKE_CURRENT_SOURCE_DIR}/)` in
cmake. It is hard to set the source directory as a include path
in some build systems e.g., bazel. Using the relative path easily
solves this issue. This commit uses
`#include "source/util/string_utils.h"` instead of
`#include <source/util/string_utils.h>`.diff --git a/source/opt/desc_sroa.cpp b/source/opt/desc_sroa.cpp
index 36256ff..29ba00e 100644
--- a/source/opt/desc_sroa.cpp
+++ b/source/opt/desc_sroa.cpp
@@ -14,7 +14,7 @@
#include "source/opt/desc_sroa.h"
-#include <source/util/string_utils.h>
+#include "source/util/string_utils.h"
namespace spvtools {
namespace opt {
