Fix a few typos [ci skip]

activejob/lib/active_job/arguments.rb

@@ -12,7 +12,7 @@ def initialize(e)
     end
   end
 
-  # Raised when an unsupporter argument type is being set as job argument. We
+  # Raised when an unsupported argument type is being set as job argument. We
   # currently support NilClass, Fixnum, Float, String, TrueClass, FalseClass,
   # Bignum and object that can be represented as GlobalIDs (ex: Active Record).
   # Also raised if you set the key for a Hash something else than a string or

activerecord/lib/active_record/associations.rb

@@ -1291,7 +1291,7 @@ def has_many(name, scope = nil, options = {}, &extension)
       # when you access the associated object.
       #
       # Scope examples:
-      #   has_one :auther, -> { where(comment_id: 1) }
+      #   has_one :author, -> { where(comment_id: 1) }
       #   has_one :employer, -> { joins(:company) }
       #   has_one :dob, ->(dob) { where("Date.new(2000, 01, 01) > ?", dob) }
       #