fix repo path and name unix vs linux. Add include-markdown

mkdocs.yml

 # Project information
-site_name: Linux basics training
+site_name: Unix basics training
 site_author: Jacques Dainat et al.
-site_url: https://mivegec.pages.ird.fr/dainat/malbec-linux-basics
-site_description: Linux basics training
+site_url: https://mivegec.pages.ird.fr/dainat/malbec-unix-basics/
+site_description: Unix basics training
 site_dir: public # When you build your site, all of the files are written to the directory assigned to the site_dir configuration option (defaults to "site")
 
 # Repository
-repo_name: 'malbec-linux-basics'
-repo_url: 'https://forge.ird.fr/mivegec/dainat/malbec-linux-basics'
+repo_name: 'malbec-unix-basics'
+repo_url: 'https://forge.ird.fr/mivegec/dainat/malbec-unix-basics'
 edit_uri: edit/main/docs/ # Allow to replace edit/master/docs use by default
 
 # Configuration
@@ -75,6 +75,7 @@ plugins:
   - minify:
       minify_html: true
   - macros
+  - include-markdown
 
 # Customization
 extra: