feat: add r language filetype (#414)

rumichaska · web-flow · commit 905090aaf532 · 2023-01-06T15:28:27.000+01:00
diff --git a/data/plenary/filetypes/builtin.lua b/data/plenary/filetypes/builtin.lua
@@ -42,6 +42,7 @@ return {
     ['nix'] = 'nix',
     ['plist'] = 'xml',
     ['purs'] = 'purescript',
+    ['r'] = 'r',
     ['res'] = 'rescript',
     ['resi'] = 'rescript',
     ['rkt'] = 'racket',
