Rubocop: Using single-quotes properly

spec/api/api_text_spec.rb

@@ -3,7 +3,7 @@ require 'squib'
 
 describe Squib::Deck, '#text' do
 
-  context "fonts" do
+  context 'fonts' do
      it "should use the default font when #text and #set_font don't specify" do
       card = instance_double(Squib::Card)
       expect(card).to receive(:text).with('a', 'Arial 36',
@@ -27,7 +27,7 @@ describe Squib::Deck, '#text' do
       end
     end
 
-    it "should use the specified font no matter what" do
+    it 'should use the specified font no matter what' do
       card = instance_double(Squib::Card)
       expect(card).to receive(:text).with('a', 'Arial 18',
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