Remove problematic char in __fzf_search_current_dir (#142)

There was a zero-width character that came from copy and pasting code from the GitHub web interface. It's invisible but can be seen by running git diff 2c0fb53 2c0fb53^ | vim -

functions/__fzf_search_current_dir.fish

@@ -6,7 +6,7 @@ function __fzf_search_current_dir --description "Search the current directory. R
     set fd_opts --color=always $fzf_fd_opts
     set fzf_arguments --multi --ansi $fzf_dir_opts
     set token (commandline --current-token)
-    ​# expand the token (which may include tilde, variables, etc.) into full path
+    # expand any variables or leading tilde (~) in the token
     set expanded_token (eval echo -- \"$token\")
     # unescape token because it's already quoted so backslashes will mess up the path
     set unescaped_exp_token (string unescape -- $expanded_token)