Fix successfully typo (#5394)

config/locales/en.yml

@@ -581,7 +581,7 @@ en:
       success_notice: "%{handle} was added as an unconfirmed owner. Ownership access will be enabled after the user clicks on the confirmation mail sent to their email."
     update:
       update_current_user_role: Can't update your own Role
-      success_notice: "%{handle} was succesfully updated."
+      success_notice: "%{handle} was successfully updated."
     destroy:
       removed_notice: "%{owner_name} was removed from the owners successfully"
       failed_notice: Can't remove the only owner of the gem
@@ -798,7 +798,7 @@ en:
       delete_failed: "Could not delete credential"
       delete: Delete
       confirm: Are you sure you want to delete this credential?
-      saved: Security device succesfully created
+      saved: Security device successfully created
     form:
       new_device: Register a new security device
       nickname: Nickname

test/functional/owners_controller_test.rb

@@ -393,7 +393,7 @@ class OwnersControllerTest < ActionController::TestCase
       should redirect_to("rubygem show") { rubygem_owners_path(@rubygem.slug) }
 
       should "set success notice flash" do
-        assert_equal "#{@maintainer.name} was succesfully updated.", flash[:notice]
+        assert_equal "#{@maintainer.name} was successfully updated.", flash[:notice]
       end
 
       should "downgrade the ownership to a maintainer role" do