linting fixes

lib/datadog/tracing/span_event.rb

@@ -30,7 +30,7 @@ def initialize(
       end
 
       def to_hash
-        h = { :name => @name, :time_unix_nano => @time_unix_nano }
+        h = { name: @name, time_unix_nano: @time_unix_nano }
         h[:attributes] = @attributes unless @attributes.empty?
         h
       end

spec/datadog/opentelemetry_spec.rb

@@ -638,14 +638,14 @@
 
       context 'with name, attributes and timestamp' do
         let(:event_options) do
-          { attributes: { 'raised' => false, 'handler' => 'default', 'count' => 1 }, timestamp: 17206369349 }
+          { attributes: { raised: false, handler: 'default', count: 1 }, timestamp: 17206369349 }
         end
 
         it 'adds one event to the span' do
           expect(span.events.count).to eq(1)
           expect(span.events[0].name).to eq('Exception was raised!')
           expect(span.events[0].time_unix_nano).to eq(17206369349000000000)
-          expect(span.events[0].attributes).to eq({ 'raised' => 'false', 'handler' => 'default', 'count' => '1' })
+          expect(span.events[0].attributes).to eq({ raised: false, handler: 'default', count: 1 })
         end
       end
 

spec/datadog/tracing/transport/serializable_trace_spec.rb

@@ -145,7 +145,7 @@
               Datadog::Tracing::SpanEvent.new(
                 "Another Event #{i}!",
                 time_unix_nano: 2_000_000_000,
-                attributes: { 'id' => i, 'required' => i == 1 },
+                attributes: { id: i, required: => i == 1 },
               ),
             ],
           )