[Bug]: Badge URLs with spaces are not URL-encoded

[wlangera]

What happened?

The README template generates the following badge for the CC BY 4.0 license:

[![CC BY 4.0](https://img.shields.io/badge/License-CC BY 4.0-brightgreen)](...)

When rendered on GitHub, the badge is broken because the spaces in the Shields.io URL are not URL-encoded. It looks like this:


Replacing the spaces with %20 fixes the issue:

[![CC BY 4.0](https://img.shields.io/badge/License-CC%20BY%204.0-brightgreen)](...)

which looks like

Minimal reproducible example

Created automatically in README when creating a project with `checklist::create_project()`

Session information

─ Session info ────────────────────────────────────────────────────────────────────────────────────────────────────
 setting  value
 version  R version 4.6.0 (2026-04-24 ucrt)
 os       Windows 11 x64 (build 26200)
 system   x86_64, mingw32
 ui       RStudio
 language (EN)
 collate  Dutch_Belgium.utf8
 ctype    Dutch_Belgium.utf8
 tz       Europe/Brussels
 date     2026-07-23
 rstudio  2026.06.0+242 Blue Plumbago (desktop)
 pandoc   NA
 quarto   1.9.38 @ C:\\PROGRA~1\\RStudio\\RESOUR~1\\app\\bin\\quarto\\bin\\quarto.exe

─ Packages ────────────────────────────────────────────────────────────────────────────────────────────────────────
 package     * version date (UTC) lib source
 cli           3.6.6   2026-04-09 [1] CRAN (R 4.6.0)
 fortunes      1.5-4   2016-12-29 [1] CRAN (R 4.6.0)
 rstudioapi    0.19.0  2026-06-11 [1] CRAN (R 4.6.0)
 sessioninfo   1.2.4   2026-06-04 [1] CRAN (R 4.6.0)

 [1] C:/R/library
 [2] C:/R/R-4.6.0/library

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