Formatted all pages according to guidelines.

pages/common/ls.md

@@ -1,37 +1,34 @@
 # ls
 
-> List directory contents
+> List directory contents.
 
-- List all files, even hidden
+- List all files, even hidden:
 
 `ls -a`
 
-- List all file names (no extra info)
+- List all file names (no extra info):
 
 `ls -A1`
 
-- List all files with their rights, groups, owner
+- List all files with their rights, groups, owner:
 
 `ls -l`
 
-- List all files and display the file size in a human readable format
+- List all files and display the file size in a human readable format:
 
 `ls -lh`
 
-- List all files with a prefix/suffix
+- List all files with a prefix/suffix:
 
 `ls {{prefix}}*`
-
 `ls *{{suffix}}`
 
-- Sort the results by size, last modified date, or creation date
+- Sort the results by size, last modified date, or creation date:
 
 `ls -S`
-
 `ls -t`
-
 `ls -U`
 
-- Reverse the order of the results
+- Reverse the order of the results:
 
 `ls -r`