Fix minor issues in documentation of mbedtls_ssl_check_record()
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 8279e5f..8e128c1 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -1762,7 +1762,7 @@
  *                 and authentic record (DTLS only).
  *
  *                 This function does not change the user-visible state
- *                 of the SSL context. It's sole purpose is to provide
+ *                 of the SSL context. Its sole purpose is to provide
  *                 an indication of the legitimacy of an incoming record.
  *
  *                 This can be useful e.g. in distributed server environments
@@ -1780,7 +1780,7 @@
  * \note           This routine only checks whether the provided buffer begins
  *                 with a valid, fresh and authentic record, but does not check
  *                 potential data following the initial record. In particular,
- *                 it is possible to pass DTLS datagrams containing  records,
+ *                 it is possible to pass DTLS datagrams containing records,
  *                 in which case only the first record is checked.
  *
  * \note           This function modifies the input buffer \p buf. If you need