Fix https links

README.md

@@ -3,7 +3,7 @@
 [![CRAN_Status_Badge](http://www.r-pkg.org/badges/version/elementR)](https://cran.r-project.org/package=elementR)
 [![Download_badge](http://cranlogs.r-pkg.org/badges/grand-total/elementR?color=brightgreen)](https://cran.r-project.org/package=elementR)
   [![Build Status](https://api.travis-ci.org/charlottesirot/elementR.svg?branch=master)](https://travis-ci.org/charlottesirot/elementR.svg?branch=master)
-[![codecov](https://codecov.io/gh/charlottesirot/elementR/branch/master/graph/badge.svg)](https://codecov.io/gh/charlottesirot/elementR)
+[![codecov](https://app.codecov.io/gh/charlottesirot/elementR/branch/master/graph/badge.svg)](https://app.codecov.io/gh/charlottesirot/elementR)
 
 <br/>
 
@@ -27,7 +27,7 @@ For more details on the project or on elementR, see [elementR website](https://c
 - a set of classes to handle LA-ICPMS data
 - a reactive user friendly interface running in the web browser to conduct all steps needed for an optimal data reduction while leaving maximum control to the user.
 
-**elementR** implements [R6 R classes](https://github.com/wch/R6/) and is based on [Shiny](http://shiny.rstudio.com/) for it's GUI.
+**elementR** implements [R6 R classes](https://github.com/r-lib/R6) and is based on [Shiny](https://shiny.posit.co/) for it's GUI.
 
 #### Before installation