Fix function descriptions for a couple of helpers.

fish_prompt.fish

@@ -652,7 +652,7 @@ end
 # Virtual environment segments
 # ==============================
 
-function __bobthefish_rvm_parse_ruby -S -a ruby_string scope -d 'Parse RVM Ruby string'
+function __bobthefish_rvm_parse_ruby -S -a ruby_string -a scope -d 'Parse RVM Ruby string'
     # Function arguments:
     # - 'ruby-2.2.3@rails', 'jruby-1.7.19'...
     # - 'default' or 'current'

fish_right_prompt.fish

@@ -27,7 +27,7 @@ function __bobthefish_cmd_duration -S -d 'Show command duration'
     or echo -ns ' ' $__bobthefish_left_arrow_glyph
 end
 
-function __bobthefish_pretty_ms -S -a ms interval -d 'Millisecond formatting for humans'
+function __bobthefish_pretty_ms -S -a ms -a interval -d 'Millisecond formatting for humans'
     set -l interval_ms
     set -l scale 1