fix example description

pages/common/ps.md

@@ -14,10 +14,10 @@
 
 `ps aux | grep {{string}}`
 
-- List all processes of the current user in extra full format
+- List all processes of the current user in extra full format:
 
 `ps --user $(id --user) -F`
 
-- List all processes of the current user as ASCII art process hierarchy
+- List all processes of the current user as ASCII art process hierarchy:
 
 `ps --user $(id --user) f`