Update cheatsheets

tldr/autojump

@@ -7,8 +7,13 @@ source: https://github.com/tldr-pages/tldr.git
 
 > Quickly jump among the directories you visit the most.
 > Aliases like j or jc are provided for even less typing.
+> See also: `bashmarks`.
 > More information: <https://github.com/wting/autojump>.
 
+- Add the autojump aliases to your shell:
+
+`source /usr/share/autojump/autojump.{{bash|fish|zsh}}`
+
 - Jump to a directory that contains the given pattern:
 
 `j {{pattern}}`