Fix some documentation typos and improve a comment
diff --git a/library/ecp.c b/library/ecp.c
index dff5f90..b193ad4 100644
--- a/library/ecp.c
+++ b/library/ecp.c
@@ -1610,9 +1610,9 @@
norm_add:
#endif
/*
- * Normalize final elements in T. Even though there are no holes now,
- * we still need the auxiliary array for homogeneity with last time.
- * Also, skip T[0] which is already normalised, being a copy of P.
+ * Normalize final elements in T. Even though there are no holes now, we
+ * still need the auxiliary array for homogeneity with the previous
+ * call. Also, skip T[0] which is already normalised, being a copy of P.
*/
for( j = 0; j + 1 < T_size; j++ )
TT[j] = T + j + 1;