rubocop: fix offences of the Style/AsciiComments cop

.rubocop_todo.yml

@@ -137,13 +137,6 @@ Style/AccessModifierDeclarations:
     - 'spec/editor_spec.rb'
     - 'spec/method/patcher_spec.rb'
 
-# Offense count: 2
-# Configuration parameters: AllowedChars.
-Style/AsciiComments:
-  Exclude:
-    - 'lib/pry/pry_instance.rb'
-    - 'lib/pry/terminal.rb'
-
 # Offense count: 39
 Style/CaseEquality:
   Enabled: false

lib/pry/pry_instance.rb

@@ -351,7 +351,7 @@ class Pry
   end
   private :handle_line
 
-  # Potentially deprecated — Use `Pry::REPL.new(pry, :target => target).start`
+  # Potentially deprecated. Use `Pry::REPL.new(pry, :target => target).start`
   # (If nested sessions are going to exist, this method is fine, but a goal is
   # to come up with an alternative to nested sessions altogether.)
   def repl(target = nil)

lib/pry/terminal.rb

@@ -25,7 +25,7 @@ class Pry
       end
 
       def actual_screen_size
-        # The best way, if possible (requires non-jruby ≥1.9 or io-console gem)
+        # The best way, if possible (requires non-jruby >=1.9 or io-console gem)
         screen_size_according_to_io_console ||
           # Fall back to the old standby, though it might be stale:
           screen_size_according_to_env ||