[MAINT] add link checker

.github/workflows/check_md_links.yml

@@ -0,0 +1,28 @@
+---
+name: Check Markdown links
+
+# checking for any dead links in markdown files
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  push:
+    branches:
+    - main
+  pull_request:
+    branches: ['*']
+
+jobs:
+  markdown-link-check:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: gaurav-nelson/github-action-markdown-link-check@v1
+      with:
+        config-file: ./mlc_config.json
+        folder-path: ./docs/
+        use-verbose-mode: yes
+        max-depth: -1
+        file-path: ./README.md,

docs/01_introduction.md

@@ -2,7 +2,7 @@
 
 ??? example "Tl;DR - Advantages of the current schema representation"
     - Rich contexts for a questionnaire with JSON-LD rather than a "flat" csv file.
-    - A single source of curated assessments from [ReproSchema Library](https://github.com/reproschema-library)
+    - A single source of curated assessments from [ReproSchema Library](https://github.com/ReproNim/reproschema-library)
     - Each `item` (i.e question), `activity` (i.e questionnaire), and `protocol`
     (i.e set of questionnaires) provides unique and persistent identifiers.
     - Versions of a given questionnaire can be tracked (e.g., PHQ-9, PHQ-8).

mlc_config.json

@@ -0,0 +1,9 @@
+{
+    "ignorePatterns": [
+        {"pattern": "http://127.0.0.1:8000/"},
+        {"pattern": "^https://jsonformatter.curiousconcept.com/"},
+        {"pattern": "^http.*://schema.repronim.org/.*"},
+        {"pattern": "^http://schema.org/version/2.0/"}
+
+    ]
+}