py/sequence: Fix grammar in comment about equality.

py/sequence.c

@@ -165,7 +165,7 @@ bool mp_seq_cmp_bytes(mp_uint_t op, const byte *data1, size_t len1, const byte *
     size_t min_len = len1 < len2 ? len1 : len2;
     int res = memcmp(data1, data2, min_len);
     if (op == MP_BINARY_OP_EQUAL) {
-        // If we are checking for equality, here're the answer
+        // If we are checking for equality, here's the answer
         return res == 0;
     }
     if (res < 0) {