Update textbook.en.md

00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/05.first-steps/textbook.en.md

@@ -51,7 +51,7 @@ starting with three initials in brackets that represent you :
 *(my initials): my comment* 
 
 To **communicate my proposals**, either:
-* Directly on the **GitLab M3P2**:
+* Directly on the *GitLab M3P2*:
 <details>
 <summary> More information </summary>
 Only for those who have an M3P2 account and have received the little introduction to Git:
@@ -60,7 +60,7 @@ Only for those who have an M3P2 account and have received the little introductio
 </details>
 
 <br>
-* On the **Google Docs M3P2**: to be specified.
+* On the *Google Docs M3P2*: to be specified.
 
 The Gitlab will be kept up to date with your proposals, also translated into English and Spanish.<br>
 _(This is not required, but if you can also make your contribution in French, more in_