Update sample/social/readme.md

sample/social/readme.md

@@ -4,6 +4,6 @@
 - data model defined in model.php
 - to create db tables run create_tables.php
 - to insert random data run randomize.php
-- to list data in db run list.php
+- to list the data in db, run list.php
 
 you need to create a writable cache folder if you use files as cache-type.