ci: add markdown lint and link validation

.github/workflows/markdown-checks.yml

@@ -0,0 +1,40 @@
+name: Markdown Checks
+
+on:
+  pull_request:
+    branches: [master]
+  push:
+    branches: [master]
+
+jobs:
+  markdownlint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: markdownlint
+        uses: DavidAnson/markdownlint-cli2-action@v16
+        with:
+          globs: "**/*.md"
+
+  link-check:
+    name: Link Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Check links
+        uses: lycheeverse/lychee-action@v2
+        with:
+          args: >
+            --verbose
+            --no-progress
+            --timeout 30
+            --retry-wait-time 5
+            --max-retries 3
+            --exclude "mailto:"
+            --user-agent "Mozilla/5.0 (compatible; lychee link checker)"
+            "**/*.md"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.lycheeignore

@@ -0,0 +1,10 @@
+# Sites that block CI/bot traffic but are live
+https://www.diversifytech.co/tech-conference-scholarships
+https://racketfest.com/
+https://www.harvardwecode.com/
+https://diversitytickets.org/
+https://emberconf.com/
+# Medium blocks all bots with 403
+https://medium.com/
+https://accessconference.ca/
+http://codelandconf.com/

.markdownlint.json

@@ -0,0 +1,6 @@
+{
+  "default": true,
+  "MD013": false,
+  "MD033": false,
+  "MD041": false
+}

README.md

@@ -15,10 +15,9 @@
 - [Abstractions](https://abstractions.io/)
 - [AffectConf](https://affectconf.com/scholarships/)
 - [AfroTech](https://experience.afrotech.com/)
-- [AWS re:Invent](https://reinvent.awsevents.com/community/we_power_tech_grant/)
+- [AWS re:Invent](https://reinvent.awsevents.com/)
 - [Clarity Conf](https://www.clarityconf.com/)
 - [Clarity](https://www.clarityconf.com/)
-- [Clojure/Conj](http://clojure-conj.org/opportunity)
 - [Code Sync](https://codesync.global/)
 - [Codeland Conf](http://codelandconf.com/)
 - [Codemotion Conference Madrid](https://conferences.codemotion.com/madrid/inclusion-y-diversidad/)
@@ -31,42 +30,33 @@
 - [Grace Hopper Celebration of Women in Computing](https://ghc.anitab.org/)
 - [Harvard WECode](https://www.harvardwecode.com/)
 - [JSConf Hawai'i](https://www.jsconfhi.com/)
-- [JSConf USA](https://jsconf.us/)
 - [Kong Summit](https://konghq.com/kong-summit/diversity-scholarship/)
 - [KubeCon](https://events.linuxfoundation.org/kubecon-cloudnativecon-europe/attend/diversity-scholarships)
 - [Linux Foundation - Node.js Interactive](http://events.linuxfoundation.org/events/node-interactive/attend/diversityscholarship)
 - [Linux Foundation - Open Source Summit](http://events.linuxfoundation.org/events/open-source-summit-north-america/attend/scholarship-opportunities)
-- [LocoMocoSec](https://locomocosec.com/di/)
-- [Microsoft Diversity Scholarships](https://careers.microsoft.com/us/en/usscholarshipprogram)
 - [MongoDB World](https://www.mongodb.com/mongodb-diversity-scholarship)
 - [O'Reilly Conferences](http://www.oreilly.com/conferences/diversity-application.csp)
-- [Open Go](https://opengo.io/)
-- [Out 4 Undergrad Tech](http://outforundergrad.org/)
 - [PerfMatters Conf](https://perfmattersconf.com/)
 - [Pioneer Grid](https://pioneergrid.com/)
 - [PyCon](https://us.pycon.org/)
 - [PyData](https://pydata.org/diversity-inclusion/)
 - [Racketfest](https://racketfest.com/)
-- [RailsConf](http://railsconf.com/scholarships)
 - [React.js Conf](https://conf.reactjs.org/)
 - [ReasonConf](https://www.reason-conf.com/)
 - [RubyConf](http://rubyconf.org/)
 - [SIGNAL](https://signal.twilio.com/)
 - [Strange Loop](http://www.thestrangeloop.com/opportunity.html)
-- [TAPIA Conference](http://tapiaconference.org/)
 - [Tech Inclusion Conferences](https://techinclusion.co/)
 - [The LEad Developer](https://theleaddeveloper.com/)
 - [Thunder Plains](http://thunderplainsconf.com/)
 - [trySwift](https://www.tryswift.co/)
 - [Women in Cybersecurity Conference](https://www.wicys.org/conference)
 - [Wonder Woman Tech](https://wonderwomentech.com/)
-- [Write, Speak, Code](http://www.writespeakcode.com/)
 
 > Canada
 
 - [AccessConference](https://accessconference.ca/)
 - [DevOps Toronto](https://devopsto.com/#diversity-scholarship)
-- [GoCon](https://gocon.ca/#diversity-scholarship)
 
 ## Europe
 
@@ -77,12 +67,8 @@
 - [ffconf](https://ffconf.org/)
 - [JSConf EU](https://jsconf.eu/)
 - [MesosCon Europe](http://events.linuxfoundation.org/events/mesoscon-europe/attend/scholarship)
-- [PHP UK Conference](http://phpconference.co.uk/diversity/)
 - [React Summit](https://medium.com/@ReactAmsterdam/react-summit-2020-diversity-scholarships-now-available-dfaaa9cfc6d3)
-- [Serverlessdays Hamburg](https://hamburg.serverlessdays.io/)
-- [Spring I/0](https://2019.springio.net/diversity-scholarships)
 - [useR! Conference](http://user2019.r-project.org/)
-- [You Gotta Love Frontend Lithuania](https://lithuania.yglfconf.com/scholarship)
 
 ## Code of Conduct