Add path completion for rst files

after/ftplugin/rst.lua

@@ -1,3 +1,10 @@
 local opt = vim.opt
 
 opt.wrap = true
+
+local cmp = require "cmp"
+local sources = cmp.get_config().sources
+
+table.insert(sources, { name = "path" })
+
+cmp.setup.buffer { sources = sources }