Repair link anchors by lowercasing them

See https://gitlab.com/gitlab-org/gitlab/-/blob/0382457bcbf2bea4cdf7e19776a9bdf713936886/doc/development/documentation/styleguide.md#anchor-links

app/workers/concerns/worker_attributes.rb

@@ -71,14 +71,14 @@ module WorkerAttributes
 
     # Set this attribute on a job when it will call to services outside of the
     # application, such as 3rd party applications, other k8s clusters etc See
-    # doc/development/sidekiq_style_guide.md#Jobs-with-External-Dependencies for
+    # doc/development/sidekiq_style_guide.md#jobs-with-external-dependencies for
     # details
     def worker_has_external_dependencies!
       class_attributes[:external_dependencies] = true
     end
 
     # Returns a truthy value if the worker has external dependencies.
-    # See doc/development/sidekiq_style_guide.md#Jobs-with-External-Dependencies
+    # See doc/development/sidekiq_style_guide.md#jobs-with-external-dependencies
     # for details
     def worker_has_external_dependencies?
       class_attributes[:external_dependencies]

doc/development/architecture.md

@@ -567,7 +567,7 @@ For monitoring deployed apps, see the [Sentry integration docs](../user/project/
   - [GDK](https://gitlab.com/gitlab-org/gitlab/blob/master/config/gitlab.yml.example)
 - Layer: Core Service (Processor)
 - Process: `sidekiq`
-- GitLab.com: [Sidekiq](../user/gitlab_com/index.md#Sidekiq)
+- GitLab.com: [Sidekiq](../user/gitlab_com/index.md#sidekiq)
 
 Sidekiq is a Ruby background job processor that pulls jobs from the Redis queue and processes them. Background jobs allow GitLab to provide a faster request/response cycle by moving work into the background.
 

doc/development/query_recorder.md

@@ -115,6 +115,6 @@ There are multiple ways to find the source of queries.
 
 ## See also
 
-- [Bullet](profiling.md#Bullet) For finding `N+1` query problems
+- [Bullet](profiling.md#bullet) For finding `N+1` query problems
 - [Performance guidelines](performance.md)
 - [Merge request performance guidelines](merge_request_performance_guidelines.md#query-counts)

doc/development/testing_guide/best_practices.md

@@ -741,7 +741,7 @@ GitLab uses [factory_bot](https://github.com/thoughtbot/factory_bot) as a test f
 - There should be only one top-level factory definition per file.
 - FactoryBot methods are mixed in to all RSpec groups. This means you can (and
   should) call `create(...)` instead of `FactoryBot.create(...)`.
-- Make use of [traits](https://www.rubydoc.info/gems/factory_bot/file/GETTING_STARTED.md#Traits) to clean up definitions and usages.
+- Make use of [traits](https://www.rubydoc.info/gems/factory_bot/file/GETTING_STARTED.md#traits) to clean up definitions and usages.
 - When defining a factory, don't define attributes that are not required for the
   resulting record to pass validation.
 - When instantiating from a factory, don't supply attributes that aren't

doc/topics/web_application_firewall/quick_start_guide.md

@@ -17,7 +17,7 @@ These instructions will also work for a self-managed GitLab instance. However, y
 need to ensure your own [Runners are configured](../../ci/runners/README.md) and
 [Google OAuth is enabled](../../integration/google.md).
 
-**Note**: GitLab's Web Application Firewall is deployed with [Ingress](../../user/clusters/applications.md#Ingress),
+**Note**: GitLab's Web Application Firewall is deployed with [Ingress](../../user/clusters/applications.md#ingress),
 so it will be available to your applications no matter how you deploy them to Kubernetes.
 
 ## Configuring your Google account

spec/workers/every_sidekiq_worker_spec.rb

@@ -53,7 +53,7 @@ RSpec.describe 'Every Sidekiq worker' do
 
     # All Sidekiq worker classes should declare a valid `feature_category`
     # or explicitly be excluded with the `feature_category_not_owned!` annotation.
-    # Please see doc/development/sidekiq_style_guide.md#Feature-Categorization for more details.
+    # Please see doc/development/sidekiq_style_guide.md#feature-categorization for more details.
     it 'has a feature_category or feature_category_not_owned! attribute', :aggregate_failures do
       workers_without_defaults.each do |worker|
         expect(worker.get_feature_category).to be_a(Symbol), "expected #{worker.inspect} to declare a feature_category or feature_category_not_owned!"
@@ -62,7 +62,7 @@ RSpec.describe 'Every Sidekiq worker' do
 
     # All Sidekiq worker classes should declare a valid `feature_category`.
     # The category should match a value in `config/feature_categories.yml`.
-    # Please see doc/development/sidekiq_style_guide.md#Feature-Categorization for more details.
+    # Please see doc/development/sidekiq_style_guide.md#feature-categorization for more details.
     it 'has a feature_category that maps to a value in feature_categories.yml', :aggregate_failures do
       workers_with_feature_categories = workers_without_defaults
                   .select(&:get_feature_category)