fish: Add alias to fuzzy search RFC documents

fish/.config/fish/config.fish

@@ -406,6 +406,13 @@ function pk --description "Fuzzy find a process to kill"
   kill -SIGKILL $proc
 end
 
+function rfc --description "Search for string in RFC documents and open"
+  if test -e ~/rfc
+    rg --files-with-matches $argv ~/rfc | fzf | read -l result
+    nvim -R $result
+  end
+end
+
 fzf_key_bindings
 
 starship init fish | source