Update README: badges + links · UCL-ARC/r-amr-epidemiology@15e8de5

The following actions uses Node.js version which is deprecated and will be forced to run on node20: actions/checkout@v3, actions/[email protected]. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

[missing file]: [Subsetting through other logical operations](06-data-subsetting.Rmd)

[missing file]: [Navigating Files and Directories](02-filedir.md)

[missing file]: [](fig/filesystem-challenge.svg)

[missing file]: [](fig/filesystem-challenge.svg)

[missing file]: [setup episode](02-setup.md#default-git-branch-naming)

[missing file]: [later episode](13-hosting.md)

[missing file]: [episode](04-changes.md)

[missing file]: [Subsetting data](episodes/06-data-subsetting.Rmd)

[missing file]: [Control flow](episodes/07-control-flow.Rmd)

[missing file]: [Creating publication quality graphics](episodes/08-plot-ggplot2.Rmd)

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