make pedantic lint happy

Signed-off-by: Arnaud J Le Hors <lehors@us.ibm.com>

Author: lehors

CONTRIBUTING.md

@@ -80,10 +80,10 @@ VS Code will build the container and configure the development environment autom
 
 Once done, you can open a Terminal and launch the development server in the DevContainer with the following command:
 
-    ```shell
-	cd docs
-    netlify dev -c 'bundle exec jekyll serve --livereload --incremental'
-    ```
+```shell
+cd docs
+netlify dev -c 'bundle exec jekyll serve --livereload --incremental'
+```
 
 ### Deploying the site locally