docs: adds vale rules and workflow for running in CI (Redocly#2348)

* docs: adds vale rules and workflow for running in CI

* docs: updates product name from ReDoc to Redoc

Author: HCloward

.github/styles/Vocab/Rules/accept.txt

@@ -0,0 +1,150 @@
+[Aa]nsible
+[Aa]utostart
+[Bb]locklist
+[Bb]locklists
+[Bb]oolean
+[Bb]reakpoint
+[B]reakpoints
+[Cc]ancelation
+[Cc]lassloading
+[Cc]hargeback
+[Cc]hargebacks
+[Cc]he
+[Cc]rypto
+[Cc]ryptocurrency
+[Dd]evfile|[Dd]evfiles
+[Dd]ownstream
+[Dd]ownstreaming
+[Ff]actories|[Ff]actory
+[Gg]it
+[Gg]rafana
+[Hh]eatmap
+[Hh]elm
+[Hh]ostname
+[Ii]tem
+[Jj]etbrains
+[Kk]eycloak
+[Ll]iveness
+[Ll]ombok
+[Ll]oopback
+[Mm]aven
+[Mm]inikube
+[Mm]inishift
+[Mm]ixin|[Mm]ixins
+[Mm]odularization
+[Mm]ulticluster
+[Mm]ultihost
+[Mm]ultinode
+[Mm]ultitenant
+[Mm]ultiuser
+[Mm]ultizone
+[Nn]amespace|[Nn]amespaces
+[Nn]etcoredebug[Oo]utput
+[Nn]ginx
+[Oo]nboarding
+[Pp]podman
+[Pp]reconfigured
+[Rr]eadonly
+[Rr]epresentment
+[Rr]ollout|[Rr]ollouts
+[Rr]untime|[Rr]untimes
+[Ss]erializer
+[Ss]erverless
+[Ss]ubnetwork
+[Ss]ubpath|[Ss]ubpaths
+[Tt]heia
+[Tt]olerations
+[Tt]ruststore
+[Uu]ninstallation
+[Uu]nstaged
+[Uu]ntrusted
+[Ww]orkspace|[Ww]orkspaces
+[Yy]eoman
+\.NET
+adoc
+Antora
+API
+Apigee
+AsciiDoc
+AWS|aws
+Azure
+Bierner
+Bitbucket
+btn
+Btrfs
+CentOS
+Ceph
+Che-Theia
+CLI
+ConfigMap|ConfigMaps
+Ctrl
+DaemonSet
+Dev Workspace
+Developer Perspective
+DNS
+Docker
+Dockerfile
+Dotnet
+Endevor
+endif
+GitHub|github
+GitLab
+Gluster
+Gradle
+Grafana
+GUI
+HTTPS|https
+I/O
+IDE|ide|IDEs
+Intelephense
+IntelliJ IDEA
+Java
+Java Lombok
+JSON|json
+JVM|jvm
+kbd
+Kubespray
+Laravel
+Let\'s Encrypt
+Mattermost
+mebibytes
+Microsoft Azure
+millicores
+Mulesoft
+MySQL
+Netlify
+Node.js
+npm
+NuGet
+OAuth
+ocp
+OmniSharp
+OpenShift
+OpenTracing
+Operator
+OperatorHub
+OpenAPI
+osd
+PHP
+PostgreSQL
+Quarkus
+Rebilly
+Redoc
+Redocly
+Redocly-cli
+SCM
+Sharding
+SonarLint
+Spring Boot
+SVG
+Uber
+URI|URIs
+URL|url|URLs
+Velero
+Vercel
+Visual Studio Code
+vsix
+Webview|Webviews
+Woopra
+YAML|yaml
+Zowe

.github/styles/Vocab/Rules/reject.txt

@@ -0,0 +1,16 @@
+name: Docs lint
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  vale:
+    name: vale action
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: errata-ai/vale-action@reviewdog
+        with:
+          files: '["README.md", "docs"]'
+        env:
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}