add link_checker

.github/workflows/link_checker.yml

@@ -0,0 +1,21 @@
+name: Check Docs links
+
+on:
+  push:
+  pull_request:
+  schedule:
+    # Run everyday at 3 am UTC 
+    - cron: 0 3 * * *
+
+jobs:
+  markdown-link-check:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@master
+    - name: Run link check
+      uses: gaurav-nelson/github-action-markdown-link-check@v1
+      with:
+        use-quiet-mode: 'yes'
+        use-verbose-mode: 'yes'
+        file-extension: '.rst, .md'

CHANGELOG.md

@@ -19,6 +19,7 @@
 
 ## Optimizations
 
+-   Add docs link checker in workflows ([#1347](https://github.com/pybamm-team/PyBaMM/pull/1347))
 -   The `Solution` class now only creates the concatenated `y` when the user asks for it. This is an optimization step as the concatenation can be slow, especially with larger experiments ([#1331](https://github.com/pybamm-team/PyBaMM/pull/1331))
 -   If solver method `solve()` is passed a list of inputs as the `inputs` keyword argument, the resolution of the model for each input set is spread across several Python processes, usually running in parallel on different processors. The default number of processes is the number of processors available. `solve()` takes a new keyword argument `nproc` which can be used to set this number a manually.
 -   Variables are now post-processed using CasADi ([#1316](https://github.com/pybamm-team/PyBaMM/pull/1316))