vim-patch:9.0.0752: Rprofile files are not recognized (#20658)

Problem:    Rprofile files are not recognized.
Solution:   Recognize Rprofile files as "r". (closes vim/vim#11369)
7e120ffccb

runtime/lua/vim/filetype.lua

@@ -1540,6 +1540,9 @@ local filename = {
   ['.pythonstartup'] = 'python',
   ['.pythonrc'] = 'python',
   SConstruct = 'python',
+  ['.Rprofile'] = 'r',
+  ['Rprofile'] = 'r',
+  ['Rprofile.site'] = 'r',
   ratpoisonrc = 'ratpoison',
   ['.ratpoisonrc'] = 'ratpoison',
   inputrc = 'readline',