Fix typos (mastodon#18604)

* Fix typos

Found via `codespell -q 3 -S ./CHANGELOG.md,./AUTHORS.md,./config/locales,./app/javascript/mastodon/locales -L ba,keypair,medias,pixelx,ro`

* Follow-up typo fix

lib/mastodon/search_cli.rb

@@ -30,7 +30,7 @@ class SearchCLI < Thor
       changed since the last run. Index upgrades erase index data.
 
       Even if creating or upgrading indices is not necessary, data from the
-      database will be imported into the indices, unless overriden with --no-import.
+      database will be imported into the indices, unless overridden with --no-import.
     LONG_DESC
     def deploy
       if options[:concurrency] < 1

lib/tasks/mastodon.rake

@@ -11,7 +11,7 @@ namespace :mastodon do
     # When the application code gets loaded, it runs `lib/mastodon/redis_configuration.rb`.
     # This happens before application environment configuration and sets REDIS_URL etc.
     # These variables are then used even when REDIS_HOST etc. are changed, so clear them
-    # out so they don't interfer with our new configuration.
+    # out so they don't interfere with our new configuration.
     ENV.delete('REDIS_URL')
     ENV.delete('CACHE_REDIS_URL')
     ENV.delete('SIDEKIQ_REDIS_URL')

spec/lib/request_spec.rb

@@ -63,7 +63,7 @@
         expect(a_request(:get, 'http://example.com').with(headers: subject.headers)).to have_been_made
       end
 
-      it 'closes underlaying connection' do
+      it 'closes underlying connection' do
         expect_any_instance_of(HTTP::Client).to receive(:close)
         expect { |block| subject.perform &block }.to yield_control
       end