[Docs]: minor fix

[jamesgeorge007]

Made the respective badges to point appropriately.

• I acknowledge that all my contributions will be made under the project's license.

[welcome]

Congratulations on your first contribution to the Serverless Toolkit!
We'd love to say thank you and send you some swag. If you are interested please fill out this form at https://twil.io/hacktoberfest-swag
If you are on the look out for more ways to contribute to open-source, check out a list of some of our repositories at https://github.com./twilio/opensource.
And if you love Twilio as much as we do, make sure to check out our Twilio Champions program!