diff --git a/app/assets/javascripts/discourse/ember-cli-build.js b/app/assets/javascripts/discourse/ember-cli-build.js
index c7f9c2ff4e4..60f707624d4 100644
--- a/app/assets/javascripts/discourse/ember-cli-build.js
+++ b/app/assets/javascripts/discourse/ember-cli-build.js
@@ -22,7 +22,7 @@ module.exports = function (defaults) {
       insertContentForTestBody: false,
     },
     sourcemaps: {
-      // There seems to be a bug with brocolli-concat when sourcemaps are disabled
+      // There seems to be a bug with broccoli-concat when sourcemaps are disabled
       // that causes the `app.import` statements below to fail in production mode.
       // This forces the use of `fast-sourcemap-concat` which works in production.
       enabled: true,
diff --git a/app/assets/javascripts/discourse/tests/helpers/qunit-helpers.js b/app/assets/javascripts/discourse/tests/helpers/qunit-helpers.js
index 93c67017230..4261b2992d5 100644
--- a/app/assets/javascripts/discourse/tests/helpers/qunit-helpers.js
+++ b/app/assets/javascripts/discourse/tests/helpers/qunit-helpers.js
@@ -241,7 +241,6 @@ export function discourseModule(name, options) {
 export function addPretenderCallback(name, fn) {
   if (name && fn) {
     if (_pretenderCallbacks[name]) {
-      // eslint-disable-next-line no-console
       throw `There is already a pretender callback with module name (${name}).`;
     }
 
@@ -572,7 +571,7 @@ export async function paste(element, text, otherClipboardData = {}) {
   return e;
 }
 
-// The order of attributes can vary in diffferent browsers. When comparing
+// The order of attributes can vary in different browsers. When comparing
 // HTML strings from the DOM, this function helps to normalize them to make
 // comparison work cross-browser
 export function normalizeHtml(html) {
diff --git a/config/dev_defaults.yml b/config/dev_defaults.yml
index 978477e4860..dcdb65dfa09 100644
--- a/config/dev_defaults.yml
+++ b/config/dev_defaults.yml
@@ -26,6 +26,7 @@ topic:
     max: 12
     overrides:
       # topic titles can be found in config/locales/faker.en.yml
+      # in the discourse_dev_assets gem
       - title: "Coolest thing you have seen today"
         count: 99
   tags:
@@ -36,5 +37,5 @@ user:
   count: 30
 
 new_user:
-   username: new_user
-   email: new_user@example.com
+  username: new_user
+  email: new_user@example.com
diff --git a/config/initializers/100-logster.rb b/config/initializers/100-logster.rb
index 225e9728beb..5047a01a638 100644
--- a/config/initializers/100-logster.rb
+++ b/config/initializers/100-logster.rb
@@ -11,7 +11,7 @@ end
 
 if Rails.env.development? && RUBY_VERSION.match?(/^2\.5\.[23]/)
   STDERR.puts "WARNING: Discourse development environment runs slower on Ruby 2.5.3 or below"
-  STDERR.puts "We recommend you upgrade to Ruby 2.6.1 for the optimal development performance"
+  STDERR.puts "We recommend you upgrade to the latest Ruby 2.x for the optimal development performance"
 
   # we have to used to older and slower version of the logger cause the new one exposes a Ruby bug in
   # the Queue class which causes segmentation faults
diff --git a/lib/tasks/db.rake b/lib/tasks/db.rake
index 8d0c37013e8..1d5a0ed709a 100644
--- a/lib/tasks/db.rake
+++ b/lib/tasks/db.rake
@@ -129,7 +129,7 @@ task 'multisite:migrate' => ['db:load_config', 'environment', 'set_locale'] do |
 
     SeedFu.quiet = true
 
-    def execute_concurently(concurrency, exceptions)
+    def execute_concurrently(concurrency, exceptions)
       queue = Queue.new
 
       RailsMultisite::ConnectionManagement.each_connection do |db|
@@ -180,7 +180,7 @@ task 'multisite:migrate' => ['db:load_config', 'environment', 'set_locale'] do |
       end
     end
 
-    execute_concurently(concurrency, exceptions) do |db|
+    execute_concurrently(concurrency, exceptions) do |db|
       puts "Migrating #{db}"
       ActiveRecord::Tasks::DatabaseTasks.migrate
     end
@@ -189,7 +189,7 @@ task 'multisite:migrate' => ['db:load_config', 'environment', 'set_locale'] do |
 
     SeedFu.seed(SeedHelper.paths, /001_refresh/)
 
-    execute_concurently(concurrency, exceptions) do |db|
+    execute_concurrently(concurrency, exceptions) do |db|
       puts "Seeding #{db}"
       SeedFu.seed(SeedHelper.paths, SeedHelper.filter)