update spacing in readme (#3970)
update spacing in readme (#3970)

Addresses https://github.com/DataDog/integrations-core/issues/3907
DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core