Change queueing to queuing in docs and comments [skip ci]

My spellchecker flagged this as an incorrect spelling, upon further
research it appears to be a point of contention in English. Either way
might work.

After further examination queuing is much more common in the Rails
codebase so making this change will serve to standardize the spelling.

7 files changed, 13 insertions, 13 deletions

diff --git a/activejob/README.md b/activejob/README.md
index d49fcfe3c2..a2a5289ab7 100644
--- a/activejob/README.md
+++ b/activejob/README.md
@@ -1,7 +1,7 @@
 # Active Job -- Make work happen later
 
 Active Job is a framework for declaring jobs and making them run on a variety
-of queueing backends. These jobs can be everything from regularly scheduled
+of queuing backends. These jobs can be everything from regularly scheduled
 clean-ups, to billing charges, to mailings. Anything that can be chopped up into
 small units of work and run in parallel, really.
 
@@ -20,7 +20,7 @@ switch between them without having to rewrite your jobs.
 
 ## Usage
 
-To learn how to use your preferred queueing backend see its adapter
+To learn how to use your preferred queuing backend see its adapter
 documentation at
 [ActiveJob::QueueAdapters](http://api.rubyonrails.org/classes/ActiveJob/QueueAdapters.html).
 
@@ -39,7 +39,7 @@ end
 Enqueue a job like so:
 
 ```ruby
-MyJob.perform_later record  # Enqueue a job to be performed as soon as the queueing system is free.
+MyJob.perform_later record  # Enqueue a job to be performed as soon as the queuing system is free.
 ```
 
 ```ruby
@@ -82,9 +82,9 @@ This works with any class that mixes in GlobalID::Identification, which
 by default has been mixed into Active Record classes.
 
 
-## Supported queueing systems
+## Supported queuing systems
 
-Active Job has built-in adapters for multiple queueing backends (Sidekiq,
+Active Job has built-in adapters for multiple queuing backends (Sidekiq,
 Resque, Delayed Job and others). To get an up-to-date list of the adapters
 see the API Documentation for [ActiveJob::QueueAdapters](http://api.rubyonrails.org/classes/ActiveJob/QueueAdapters.html).
 
diff --git a/activejob/activejob.gemspec b/activejob/activejob.gemspec
index cd7ac210ec..20b9d4ccdd 100644
--- a/activejob/activejob.gemspec
+++ b/activejob/activejob.gemspec
@@ -7,7 +7,7 @@ Gem::Specification.new do |s|
   s.name        = "activejob"
   s.version     = version
   s.summary     = "Job framework with pluggable queues."
-  s.description = "Declare job classes that can be run by a variety of queueing backends."
+  s.description = "Declare job classes that can be run by a variety of queuing backends."
 
   s.required_ruby_version = ">= 2.4.1"
 
diff --git a/activejob/lib/active_job/base.rb b/activejob/lib/active_job/base.rb
index 95b1062701..ed41fac4b8 100644
--- a/activejob/lib/active_job/base.rb
+++ b/activejob/lib/active_job/base.rb
@@ -40,7 +40,7 @@ module ActiveJob #:nodoc:
   # Records that are passed in are serialized/deserialized using Global
   # ID. More information can be found in Arguments.
   #
-  # To enqueue a job to be performed as soon as the queueing system is free:
+  # To enqueue a job to be performed as soon as the queuing system is free:
   #
   #   ProcessPhotoJob.perform_later(photo)
   #
diff --git a/activejob/lib/active_job/callbacks.rb b/activejob/lib/active_job/callbacks.rb
index 334b24fb3b..61317c7cfc 100644
--- a/activejob/lib/active_job/callbacks.rb
+++ b/activejob/lib/active_job/callbacks.rb
@@ -130,7 +130,7 @@ module ActiveJob
         set_callback(:enqueue, :after, *filters, &blk)
       end
 
-      # Defines a callback that will get called around the enqueueing
+      # Defines a callback that will get called around the enqueuing
       # of the job.
       #
       #   class VideoProcessJob < ActiveJob::Base
diff --git a/activejob/lib/active_job/core.rb b/activejob/lib/active_job/core.rb
index 62bb5861bb..698153636b 100644
--- a/activejob/lib/active_job/core.rb
+++ b/activejob/lib/active_job/core.rb
@@ -78,7 +78,7 @@ module ActiveJob
     end
 
     # Returns a hash with the job data that can safely be passed to the
-    # queueing adapter.
+    # queuing adapter.
     def serialize
       {
         "job_class"  => self.class.name,
diff --git a/activejob/lib/active_job/execution.rb b/activejob/lib/active_job/execution.rb
index f5a343311f..e96dbcd4c9 100644
--- a/activejob/lib/active_job/execution.rb
+++ b/activejob/lib/active_job/execution.rb
@@ -26,7 +26,7 @@ module ActiveJob
       end
     end
 
-    # Performs the job immediately. The job is not sent to the queueing adapter
+    # Performs the job immediately. The job is not sent to the queuing adapter
     # but directly executed by blocking the execution of others until it's finished.
     #
     #   MyJob.new(*args).perform_now
diff --git a/activejob/lib/active_job/queue_adapters.rb b/activejob/lib/active_job/queue_adapters.rb
index 3e3a474fbb..525e79e302 100644
--- a/activejob/lib/active_job/queue_adapters.rb
+++ b/activejob/lib/active_job/queue_adapters.rb
@@ -3,7 +3,7 @@
 module ActiveJob
   # == Active Job adapters
   #
-  # Active Job has adapters for the following queueing backends:
+  # Active Job has adapters for the following queuing backends:
   #
   # * {Backburner}[https://github.com/nesquena/backburner]
   # * {Delayed Job}[https://github.com/collectiveidea/delayed_job]
@@ -52,7 +52,7 @@ module ActiveJob
   #
   # No: The adapter will run jobs at the next opportunity and cannot use perform_later.
   #
-  # N/A: The adapter does not support queueing.
+  # N/A: The adapter does not support queuing.
   #
   # NOTE:
   # queue_classic supports job scheduling since version 3.1.
@@ -74,7 +74,7 @@ module ActiveJob
   #
   # No: Does not allow the priority of jobs to be configured.
   #
-  # N/A: The adapter does not support queueing, and therefore sorting them.
+  # N/A: The adapter does not support queuing, and therefore sorting them.
   #
   # ==== Timeout
   #