DEV: Apply syntax_tree formatting to spec/*

spec/serializers/basic_group_user_serializer_spec.rb

@@ -4,30 +4,20 @@ RSpec.describe BasicGroupUserSerializer do
   fab!(:group) { Fabricate(:group) }
   fab!(:user) { Fabricate(:user) }
 
-  before do
-    group.add(user)
-  end
+  before { group.add(user) }
 
-  describe '#owner' do
-    describe 'when scoped to the user' do
-      it 'should be false' do
-        json = described_class.new(
-          GroupUser.last,
-          scope: Guardian.new(user),
-          root: false
-        ).as_json
+  describe "#owner" do
+    describe "when scoped to the user" do
+      it "should be false" do
+        json = described_class.new(GroupUser.last, scope: Guardian.new(user), root: false).as_json
 
         expect(json[:owner]).to eq(false)
       end
     end
 
-    describe 'when not scoped to the user' do
-      it 'should be nil' do
-        json = described_class.new(
-          GroupUser.last,
-          scope: Guardian.new,
-          root: false
-        ).as_json
+    describe "when not scoped to the user" do
+      it "should be nil" do
+        json = described_class.new(GroupUser.last, scope: Guardian.new, root: false).as_json
 
         expect(json[:owner]).to eq(nil)
       end