Fix autocucumber in documentation
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/include/test/helpers.h b/tests/include/test/helpers.h
index 568d5e5..5f9bde6 100644
--- a/tests/include/test/helpers.h
+++ b/tests/include/test/helpers.h
@@ -301,7 +301,7 @@
* - This function guarantees that if \p s begins with '-' then the sign
* bit of the result will be negative, even if the value is 0.
* When this function encounters such a "negative 0", it
- * increments #mbedtls_test_read_mpi.
+ * increments #mbedtls_test_case_uses_negative_0.
* - The size of the result is exactly the minimum number of limbs needed
* to fit the digits in the input. In particular, this function constructs
* a bignum with 0 limbs for an empty string, and a bignum with leading 0