clearer README and introduction

Author: jchiquet

README.md

@@ -2,15 +2,15 @@
 Jane Doe, John Doe
 2025-07-30
 
-*This document provides a template based on the
-[quarto](https://quarto.org/) system for contributions to Computo, using
-the [quarto journal
+*Template for preparing a submission to Computo, using the [quarto
+journal
 extension](https://github.com/computorg/computo-quarto-extension), the
 knitr kernel (R user) and
 [renv](https://rstudio.github.io/renv/articles/renv.html) to set-up the
 dependencies.  
-For a detailed, step-by-step guide on preparing your article and
-submitting it to Computo, please consult the [guidelines for
+For a detailed, step-by-step guide on preparing your article, setting up
+the continuous integration and submitting it to Computo, please consult
+the [guidelines for
 authors](https://computo-journal.org/site/guidelines-authors.html).*
 
 [![build and

_quarto.yml

@@ -27,9 +27,9 @@ author:
 date: last-modified
 date-modified: last-modified
 description: |
-  This document provides a template based on the [quarto](https://quarto.org/) system for contributions to Computo, using the [quarto journal extension](https://github.com/computorg/computo-quarto-extension), the knitr kernel (R user) and [renv](https://rstudio.github.io/renv/articles/renv.html) to set-up the dependencies.
+  Template for preparing a submission to Computo, using the [quarto journal extension](https://github.com/computorg/computo-quarto-extension), the knitr kernel (R user) and [renv](https://rstudio.github.io/renv/articles/renv.html) to set-up the dependencies.
   
-  For a detailed, step-by-step guide on preparing your article and submitting it to Computo, please consult the [guidelines for authors](https://computo-journal.org/site/guidelines-authors.html).
+  For a detailed, step-by-step guide on preparing your article, setting up the continuous integration and submitting it to Computo, please consult the [guidelines for authors](https://computo-journal.org/site/guidelines-authors.html).
 abstract: >+
   Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur posuere vestibulum facilisis. Aenean pretium orci augue, quis lobortis libero accumsan eu. Nam mollis lorem sit amet pellentesque ullamcorper. Curabitur lobortis libero eget malesuada vestibulum. Nam nec nibh massa. Pellentesque porttitor cursus tellus. Mauris urna erat, rhoncus sed faucibus sit amet, venenatis eu ipsum.
 keywords: [key1, key2, key3]

template-computo-R.qmd

@@ -6,7 +6,7 @@ This document, accompanied with the [tuned git repos](https://github.com/computo
 
 ::: {.callout-tip}
 ## Note
-This document provides only the main steps and key formatting principles. For a detailed, step-by-step guide on preparing your article and submitting it to Computo, please consult the [guidelines for authors](https://computo-journal.org/site/guidelines-authors.html).
+The content of this document only provides key formatting principles. For a detailed, step-by-step guide on preparing your article and submitting it to Computo, please consult the [guidelines for authors](https://computo-journal.org/site/guidelines-authors.html).
 :::
 
 ## Quarto