Fixed typos (#976)

Changed 'Funcitons' to 'Functions'

Author: Caceresenzo

README.md

@@ -639,7 +639,7 @@ Services to securely store your Docker images.
 - [Apache OpenWhisk](https://github.com/apache/openwhisk) - a serverless, open source cloud platform that executes functions in response to events at any scale. By [@apache](https://github.com/apache)
 - [Docker-Lambda](https://github.com/lambci/docker-lambda) - Docker images and test runners that replicate the live AWS Lambda environment. By [@lamb-ci](https://github.com/lambci)
 - [Funker](https://github.com/bfirsh/funker-example-voting-app) - Functions as Docker containers example voting app. By [@bfirsh](https://github.com/bfirsh)
-- [IronFunctions](https://github.com/iron-io/functions) - The serverless microservices platform FaaS (Funcitons as a Service) which uses Docker containers to run Any language or AWS Lambda functions
+- [IronFunctions](https://github.com/iron-io/functions) - The serverless microservices platform FaaS (Functions as a Service) which uses Docker containers to run Any language or AWS Lambda functions
 - [Koyeb](https://www.koyeb.com/) :heavy_dollar_sign: - Koyeb is a developer-friendly serverless platform to deploy apps globally. Seamlessly run Docker containers, web apps, and APIs with git-based deployment, native autoscaling, a global edge network, and built-in service mesh and discovery.
 - [OpenFaaS](https://github.com/openfaas/faas) - A complete serverless functions framework for Docker and Kubernetes. By [OpenFaaS](https://github.com/openfaas)
 - [SCAR](https://github.com/grycap/scar) - Serverless Container-aware Architectures (SCAR) is a serverless framework that allows easy deployment and execution of containers (e.g. Docker) in Serverless environments (e.g. Lambda) by [@grycap](https://github.com/grycap)