Refer to the correct header

src/libsodium/crypto_core/ed25519/ref10/ed25519_ref10.c

@@ -39,7 +39,7 @@ load_4(const unsigned char *in)
  * and 10*25.5 bit limbs elsewhere.
  *
  * Functions used elsewhere that are candidates for inlining are defined
- * via "private/curve25519_ref10.h".
+ * via "private/ed25519_ref10.h".
  */
 
 #ifdef HAVE_TI_MODE
@@ -62,7 +62,7 @@ fe25519_sqmul(fe25519 s, const int n, const fe25519 a)
 }
 
 /*
- * Inversion - returns 0 if z=0
+ * Inversion - sets out to 0 if z=0
  */
 void
 fe25519_invert(fe25519 out, const fe25519 z)