Adjust backport's documentation to account for missing features
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index da0c5ca..5fd6969 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -2107,8 +2107,8 @@
#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
/**
* \brief Set the maximum fragment length to emit and/or negotiate.
- * (Typical: the smaller of #MBEDTLS_SSL_IN_CONTENT_LEN and
- * #MBEDTLS_SSL_OUT_CONTENT_LEN, usually `2^14` bytes)
+ * (Typical: #MBEDTLS_SSL_MAX_CONTENT_LEN, by default that is
+ * set to `2^14` bytes)
* (Server: set maximum fragment length to emit,
* usually negotiated by the client during handshake)
* (Client: set maximum fragment length to emit *and*