Fix copy-pasta in documentation for MBEDTLS_ARMV8CE_AES_C

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index 07f16f7..cabb41e 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -2155,7 +2155,7 @@
  *
  * Enable ARMv8 Crypto Extensions for AES and GCM
  *
- * Module:  library/aesni.c
+ * Module:  library/armv8ce_aes.c
  * Caller:  library/aes.c
  *          library/gcm.c
  *