feat!(previewer): replace plenary.filetype with vim.filetype.match (#2529)

doc/telescope.txt

@@ -442,8 +442,8 @@ telescope.setup({opts})                                    *telescope.setup()*
 
         Fields:
           - check_mime_type:  Use `file` if available to try to infer whether the
-                              file to preview is a binary if plenary's
-                              filetype detection fails.
+                              file to preview is a binary if filetype
+                              detection fails.
                               Windows users get `file` from:
                               https://github.com/julian-r/file-windows
                               Set to false to attempt to preview any mime type.
@@ -496,11 +496,10 @@ telescope.setup({opts})                                    *telescope.setup()*
                                   end,
                                 }
                               The configuration recipes for relevant examples.
-                              Note: if plenary does not recognize your filetype yet --
-                              1) Please consider contributing to:
-                                 $PLENARY_REPO/data/plenary/filetypes/builtin.lua
-                              2) Register your filetype locally as per link
-                                 https://github.com/nvim-lua/plenary.nvim#plenaryfiletype
+                              Note: we use vim.filetype filetype detection,
+                                    so if you have troubles with files not
+                                    highlighting correctly, please read
+                                    |vim.filetype|
                               Default: nil
           - treesitter:       Determines whether the previewer performs treesitter
                               highlighting, which falls back to regex-based highlighting.