Update textbook.en.md

00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/05.classical-mechanics/vector-analysis/textbook.en.md

@@ -115,3 +115,9 @@ graph LR
 
   Estudiante --> |reads| M3P2_website
 ```
+
+Escribir --> commit-->merge
+
+Escribir  commit submit merge request
+
+git fetch # update your local copy with all changes in the remote version