Update ecdsa.h
minor fix based on review comments
@@ -238,7 +238,8 @@ int mbedtls_ecdsa_write_signature( mbedtls_ecdsa_context *ctx, mbedtls_md_type_t
*
* \see ecp.h
*
- * \deprecated Superseded by mbedtls_ecdsa_write_signature() in 2.0.0
+ * \deprecated Superseded by mbedtls_ecdsa_write_signature() in
+ * Mbed TLS version 2.0 and later.
*
* \param ctx The ECDSA context.
* \param hash The message hash.
