fix trailing white spaces
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index a79dff8..ad35f7b 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -2030,13 +2030,13 @@
#define MBEDTLS_CTR_DRBG_C
/**
- * configure key size for ctr DRBG , either
+ * configure key size for ctr DRBG , either
* MBEDTLS_CTR_DRBG_KEYSIZE_256 (default)
- * or
+ * or
* MBEDTLS_CTR_DRBG_KEYSIZE_128
* must be set.
*/
-#if !defined(MBEDTLS_CTR_DRBG_KEY_SIZE_128)
+#if !defined(MBEDTLS_CTR_DRBG_KEY_SIZE_128)
#define MBEDTLS_CTR_DRBG_KEY_SIZE_256 1
#endif
/**