[R-pkg-devel] Problem with placeholer title 'Vignette Tiitle'

Dear all,

I am trying to update the "siland" package with a new version. In this
new version, I have introduced a
vignette. By using the command R CMD check --as-cran, I have no error
message, but when I submit the
new version I get a NOTE:
Vignette package with placeholder title 'Vignette Title':
'Siland.Rmd'

So, how to avoid this NOTE ?

Here is the beginning of the vignette:

---
author : "Florence Carpentier and Olivier Martin"
date: "`r Sys.Date()`"
output:
  ?html_document:
  ??? fig_caption: false
  ??? toc: true
  ??? toc_float:
  ????? collapsed: false
  ????? smooth_scroll: false
  ??? toc_depth: 3
vignette: >
  ? %\VignetteIndexEntry{Vignette Title}
  ? %\VignetteEngine{knitr::rmarkdown}
  ? \usepackage[utf8]{inputenc}
---

```{r echo = FALSE, message = FALSE}
knitr::opts_chunk$set(collapse=T,
  ????????????????????? cache=T,
  ????????????????????? eval = F)
#knitr::opts_chunk$set(eval = FALSE)
# options(width = 120, max.print = 100)
```


Thanks for your help,
Olivier.

------------------------------------------
MARTIN Olivier
INRA Centre de recherche PACA
228 route de l'A?rodrome
Unit? Biostatistique & Processus Spatiaux
CS 40509
Domaine St Paul, Site Agroparc
84914 Avignon Cedex 9, France
Tel : 04 32 72 21 57