Update cheatsheets

tldr/fd

@@ -13,13 +13,13 @@ source: https://github.com/tldr-pages/tldr.git
 
 `fd "{{string|regex}}"`
 
-- Find files that begin with `foo`:
+- Find files that begin with a specific string:
 
-`fd "^foo"`
+`fd "{{^string}}"`
 
 - Find files with a specific extension:
 
-`fd --extension txt`
+`fd --extension {{txt}}`
 
 - Find files in a specific directory: