Fix typos/style in doxygen documentation
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index bb68d76..b9654ba 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -2029,8 +2029,9 @@
* \param buf buffer that will hold the data
* \param len maximum number of bytes to read
*
- * \return This function returns the number of bytes read, 0 for EOF,
- * or a negative error code.
+ * \return the number of bytes read, or
+ * 0 for EOF, or
+ * a negative error code.
*/
int mbedtls_ssl_read( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len );
@@ -2041,7 +2042,7 @@
* \param buf buffer holding the data
* \param len how many bytes must be written
*
- * \return This function returns the number of bytes written,
+ * \return the number of bytes written,
* or a negative error code.
*
* \note When this function returns MBEDTLS_ERR_SSL_WANT_WRITE,