fix CI and update gitignore

Author: Remi-Gau

.github/workflows/check_markdown.yml

@@ -23,9 +23,9 @@ jobs:
       with:
         node-version: '10'
 
-    - name: Install dependencies and checkmarkdown
+    - name: Install dependencies and check markdown
       run: |
         npm install `cat npm-requirements.txt`
-        remark . --frail
+        npx remark . --frail  
 
 

.gitignore

@@ -13,3 +13,7 @@ cpp_ptb
 
 # ignore file created by sphynx
 /docs/build
+
+# exclude node js stuff
+node_modules/*
+package-lock.json