Update workflow names and add badges to README.md (#251)

* Update workflow names and add badges to README.md

* Another workflow name change

.github/workflows/check-urls.yml

@@ -1,4 +1,4 @@
-name: Check URLs
+name: URLs
 
 on:
   workflow_dispatch:

.github/workflows/deploy-prod.yml

@@ -1,4 +1,4 @@
-name: Deploy to Zendesk
+name: deploy
 
 on:
   repository_dispatch:

.github/workflows/workflow-validate.yaml

@@ -1,4 +1,4 @@
-name: Validate
+name: validate
 
 on:
   repository_dispatch:

README.md

@@ -1,6 +1,10 @@
 Arduino Help Center
 ===================
 
+[![validate](https://github.com/arduino/help-center-content/actions/workflows/workflow-validate.yaml/badge.svg)](https://github.com/arduino/help-center-content/actions/workflows/workflow-validate.yaml)
+[![deploy](https://github.com/arduino/help-center-content/actions/workflows/deploy-prod.yml/badge.svg)](https://github.com/arduino/help-center-content/actions/workflows/deploy-prod.yml)
+[![URLs](https://github.com/arduino/help-center-content/actions/workflows/check-urls.yml/badge.svg)](https://github.com/arduino/help-center-content/actions/workflows/check-urls.yml)
+
 ## What Is this Repository?
 
 This repository hosts the content for the [Arduino Help Center](https://support.arduino.cc/). The content is written in Markdown, which is converted to HTML automatically during the build process.