test: update cache key

spec/controllers/api/v1/accounts/microsoft/authorization_controller_spec.rb

@@ -41,7 +41,7 @@ RSpec.describe 'Microsoft Authorization API', type: :request do
           }
         )
         expect(response.parsed_body['url']).to eq response_url
-        expect(Redis::Alfred.get(administrator.email)).to eq(account.id.to_s)
+        expect(Redis::Alfred.get("microsoft::#{administrator.email}")).to eq(account.id.to_s)
       end
     end
   end