Update markdown linter (#148)

Signed-off-by: Oliver Gould <ver@buoyant.io>

.github/workflows/markdown.yml

@@ -6,15 +6,18 @@ permissions:
 on:
   pull_request:
     paths:
-      - '**/*.md'
       - .github/workflows/markdown.yml
+      - '**/*.md'
 
 jobs:
   markdownlint:
     timeout-minutes: 5
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b
-      - uses: DavidAnson/markdownlint-cli2-action@d199b6e1b89360c71e0c21eac02f7965faf07ba6
+      - uses: DavidAnson/markdownlint-cli2-action@e3969ef4ed874458f4b66d4631f78fff7717012c
         with:
-            globs: "**/*.md"
+          globs: |
+            **/*.md
+            !**/node_modules/**
+            !target/**

CONTRIBUTING.md

@@ -100,8 +100,5 @@ Describe the testing you've done to validate your change.  Performance-related
 changes should include before- and after- benchmark results.
 
 [discourse]: https://discourse.linkerd.io/c/conduit
-[governance]: GOVERNANCE.md
 [issue]: https://github.com/linkerd/linkerd2/issues/new
-[maintainers]: MAINTAINERS.md
-[members]: https://github.com/orgs/linkerd/people
 [slack]: http://slack.linkerd.io/

README.md

@@ -86,5 +86,3 @@ Issues may be opened in the [**linkerd2** repository][new-issue].
 [rs-crate-url]: https://crates.io/crates/linkerd2-proxy-api
 [rs-docs-badge]: https://docs.rs/linkerd2-proxy-api/badge.svg
 [rs-docs-url]: https://docs.rs/linkerd2-proxy-api
-[rs-docs-url]: https://img.shields.io/crates/l/linkerd2-proxy-api
-[rs-lic-badge]: https://img.shields.io/crates/l/linkerd2-proxy-api

justfile

@@ -4,7 +4,12 @@
 ## General recipes
 ##
 
-default: rs-fetch rs-deny gen rs-check-fmt rs-clippy rs-docs rs-test
+default: rs-fetch rs-deny gen lint rs-test
+
+lint: md-lint gen-check rs-clippy rs-docs
+
+md-lint:
+    markdownlint-cli2 '**/*.md' '!**/node_modules' '!**/target'
 
 # Generate Go & Rust bindings from protobuf.
 gen: rs-gen go-gen