Add automatic closing of issues

quick-start-guides/get_started_with_git.md

@@ -14,7 +14,7 @@ git reset --hard origin/master (or origin/main)
 ```
 https://stackoverflow.com/a/38784578
 
-## work now! after you have made  changes
+## work now! after you have made changes
 ```
 git add [specify filename]
 ```
@@ -49,3 +49,11 @@ then
 ```
 git push
 ```
+
+## automatically close an open issue when pushing a commit
+```
+git commit -m "Sort more efficiently" -m "Closes #[INSERT_ISSUE_NO]]"
+```
+```
+git push
+```