Add htmlproofer in Github CI

.github/workflows/ci.yml

@@ -26,3 +26,12 @@ jobs:
           bundle exec jekyll build 2> error.log
           cat >&2 error.log
           ( ! grep -qie Error -e Warn error.log )
+      - name: HTMLProofer
+        run: |
+          # Check all links
+          bundle exec htmlproofer ./_site/\
+             --only-4xx\
+             --ignore-empty-alt=true\
+             --allow-hash-href=true\
+             --enforce-https=false\
+             --ignore-missing-alt=true

minutes/_posts/2016-06-06-may-9-2016.md

@@ -137,10 +137,7 @@ Delegate.
 ### Scala Center Proposals
 
 Proposal texts are in the
-[proposals](https://github.com/scalacenter/advisoryboard/tree/master/proposals)
-and
-[recommendations](https://github.com/scalacenter/advisoryboard/tree/master/recommendations)
-directory.  The latter directory is for accepted proposals.
+[proposals](https://github.com/scalacenter/advisoryboard/tree/main/proposals) directory.
 
 #### Proposal SCP-004: Clarification on how to write proposals
 

minutes/_posts/2016-08-09-august-9-2016.md

@@ -196,10 +196,7 @@ is already provided directly by EPFL.
 ### Scala Center Proposals
 
 Proposal texts are in the
-[proposals](https://github.com/scalacenter/advisoryboard/tree/master/proposals)
-and
-[recommendations](https://github.com/scalacenter/advisoryboard/tree/master/recommendations)
-directory.  The latter directory is for accepted proposals.
+[proposals](https://github.com/scalacenter/advisoryboard/tree/main/proposals) directory.
 
 #### Proposal SCP-001: Native Execution of Scala/Spark via LLVM
 
@@ -316,8 +313,7 @@ proposals, before the board has to vote. Heather agreed.
 Rami says SAP intends to submit proposals soon; Stu said the same of
 Twitter.
 
-Bill received a
-[meta-proposal](https://github.com/ensime/ensime.github.io/blob/e922e7cb3c06ee5f245083591315e8f564bfc343/contributing/center.md), from
+Bill received a meta-proposal from
 Sam Halliday from the ENSIME project, incorporating several topics
 around licensing and tooling.  That's the source of the next few
 agenda items (on the Scala license, the presentation compiler, and

minutes/_posts/2016-11-30-november-30-2016.md

@@ -182,10 +182,7 @@ the board and towards the Center itself.
 
 The proposals themselves are not summarized here; see the proposal
 texts in the
-[proposals](https://github.com/scalacenter/advisoryboard/tree/master/proposals)
-and
-[recommendations](https://github.com/scalacenter/advisoryboard/tree/master/recommendations)
-directories on GitHub.  (The latter is for accepted proposals.)
+[proposals](https://github.com/scalacenter/advisoryboard/tree/main/proposals) directory.
 
 #### Proposal SCP-007: Collaborative redesign and implementation of Scala 2.13's collections library
 

minutes/ab-reports/2017-q4.md

@@ -323,8 +323,8 @@ migrated non-commercial plugins that have an impact on the community:
 * [g8](https://github.com/foundweekends/giter8) in an sbt plugin that powers the `sbt new` command. It allows
   the creation of template to quickly create new projects. [PR #350](https://github.com/foundweekends/giter8/pull/350) ([@MasseGuillaume])
 
-* [sbt-aws-lambda](https://github.com/gilt/sbt-aws-lambda) is an sbt plugin that helps developer in
-  deploying code to AWS lambda. [PR #39](https://github.com/gilt/sbt-aws-lambda/pull/39) ([@Duhemm])
+* sbt-aws-lambda is an sbt plugin that helps developer in
+  deploying code to AWS lambda. PR #39 ([@Duhemm])
 
 * [sbt-spark-submit](https://github.com/saurfang/sbt-spark-submit) is an sbt plugin that makes it
   easy to submit jobs to spark, using spark-submit under the hood.