Minor grammar fix in comment
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/library/rsa_alt_helpers.h b/library/rsa_alt_helpers.h
index 580ffb2..8ff74a0 100644
--- a/library/rsa_alt_helpers.h
+++ b/library/rsa_alt_helpers.h
@@ -90,7 +90,7 @@
* \param Q Second prime factor of RSA modulus
* \param E RSA public exponent
* \param D Pointer to MPI holding the private exponent on success,
- * ie the modular inverse of E modulo LCM(P-1,Q-1).
+ * i.e. the modular inverse of E modulo LCM(P-1,Q-1).
*
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.