Fix double "/" in include in test_helpers.h

Fixes https://github.com/tensorflow/tensorflow/issues/49102
diff --git a/tensorflow/lite/micro/test_helpers.h b/tensorflow/lite/micro/test_helpers.h
index 4c8b7c2..5916521 100644
--- a/tensorflow/lite/micro/test_helpers.h
+++ b/tensorflow/lite/micro/test_helpers.h
@@ -22,7 +22,7 @@
 #include <limits>
 
 #include "flatbuffers/flatbuffers.h"  // from @flatbuffers
-#include "tensorflow/lite//kernels/internal/tensor_ctypes.h"
+#include "tensorflow/lite/kernels/internal/tensor_ctypes.h"
 #include "tensorflow/lite/c/common.h"
 #include "tensorflow/lite/kernels/internal/compatibility.h"
 #include "tensorflow/lite/micro/all_ops_resolver.h"