docs: fix fuzzy_refine reference in mapping example

Update README.md

Author: jamestrew

README.md

@@ -158,7 +158,7 @@ telescope.setup {
           ["<C-k>"] = lga_actions.quote_prompt(),
           ["<C-i>"] = lga_actions.quote_prompt({ postfix = " --iglob " }),
           -- freeze the current list and start a fuzzy search in the frozen list
-          ["<C-space>"] = actions.to_fuzzy_refine,
+          ["<C-space>"] = lga_actions.to_fuzzy_refine,
         },
       },
       -- ... also accepts theme settings, for example: