Use double quotes to include private header file psa_crypto_cipher.h

Signed-off-by: Martin Man <mman@martinman.net>
Co-authored-by: Tom Cosgrove <81633263+tom-cosgrove-arm@users.noreply.github.com>
diff --git a/library/psa_crypto_cipher.c b/library/psa_crypto_cipher.c
index 574c184..38962cd 100644
--- a/library/psa_crypto_cipher.c
+++ b/library/psa_crypto_cipher.c
@@ -22,7 +22,7 @@
 
 #if defined(MBEDTLS_PSA_CRYPTO_C)
 
-#include <psa_crypto_cipher.h>
+#include "psa_crypto_cipher.h"
 #include "psa_crypto_core.h"
 #include "psa_crypto_random_impl.h"