Fix grammar and spelling
Signed-off-by: Werner Lewis <werner.lewis@arm.com>
diff --git a/library/bignum_mod_raw.h b/library/bignum_mod_raw.h
index 7559ae8..bcdeaad 100644
--- a/library/bignum_mod_raw.h
+++ b/library/bignum_mod_raw.h
@@ -25,7 +25,7 @@
* modified by the function.
* - Bignum parameters called \p X, \p Y are outputs or input-output.
* The initial content of output-only parameters is ignored.
- * - \p T is a temporary storage area. The initial content of such
+ * - \p T is a temporary storage area. The initial content of such a
* parameter is ignored and the final content is unspecified.
* - **Bignum sizes**: bignum sizes are always expressed by the \p limbs
* member of the modulus argument. Any bignum parameters must have the same