Added more speach independence to git

git_series/eth/beginner_course/beginner_course.md

@@ -482,19 +482,19 @@ A repository is a git project
 \includegraphics[width=0.8\textwidth]{../../assets/img/git_commit_naming.png}
 \end{center}
 
-## Git Commit
+## Jumping to old versions
 
 \begin{center}
 \includegraphics[width=0.8\textwidth]{../../assets/img/git_commit_checkout_1.png}
 \end{center}
 
-## Git Commit
+## Jumping to old versions
 
 \begin{center}
 \includegraphics[width=0.8\textwidth]{../../assets/img/git_commit_checkout_2.png}
 \end{center}
 
-## Git Commit
+## Jumping to old versions
 
 \begin{center}
 \includegraphics[width=0.8\textwidth]{../../assets/img/git_commit_checkout_3.png}