exit (#24641)

* exit

added an explanation of the exit command

* add title fix format

* fixed format

* fixed title

* Fix filename to index.md

guide/english/bash/bash-exit/index.md

@@ -0,0 +1,7 @@
+---
+title: Bash exit
+---
+
+## Bash Command: exit
+
+`exit` - typing exit and pressing enter will close the current terminal window that you are working in.