Use "" for include internal/xxx

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15468)

test/sparse_array_test.c

diff --git a/test/sparse_array_test.c b/test/sparse_array_test.c
index 2c7f5a8..69f830e 100644
--- a/test/sparse_array_test.c
+++ b/test/sparse_array_test.c
@@ -13,8 +13,7 @@
 #include <limits.h>
 
 #include <openssl/crypto.h>
-#include <internal/nelem.h>
-
+#include "internal/nelem.h"
 #include "crypto/sparse_array.h"
 #include "testutil.h"
 

test/tls-provider.c

diff --git a/test/tls-provider.c b/test/tls-provider.c
index d9d5266..20360d4 100644
--- a/test/tls-provider.c
+++ b/test/tls-provider.c
@@ -14,7 +14,7 @@
 #include <openssl/params.h>
 /* For TLS1_3_VERSION */
 #include <openssl/ssl.h>
-#include <internal/nelem.h>
+#include "internal/nelem.h"
 
 static OSSL_FUNC_keymgmt_import_fn xor_import;
 static OSSL_FUNC_keymgmt_import_types_fn xor_import_types;