Fix typo

doc/fzf-vim.txt

@@ -93,7 +93,7 @@ so you can omit it if you use a plugin manager that doesn't support hooks.
  - {fzf}{1} 0.23.0 or above
  - For syntax-highlighted preview, install {bat}{5}
  - If {delta}{6} is available, `:GF?`, `:Commits` and `:BCommits` will use it to
-   format `git diff` output. to format `git diff` output
+   format `git diff` output.
  - `Ag` requires {The Silver Searcher (ag)}{7}
  - `Rg` requires {ripgrep (rg)}{8}
  - `Tags` and `Helptags` require Perl