Issue #2568439 by anchal29, hussainweb, priya.chat, r_sharma08,...

Issue #2568439 by anchal29, hussainweb, priya.chat, r_sharma08, drupal.ninja03, anil280988, snehi, tedbow, joyceg, amit.drupal, jhodgdon: profiles/README.txt incorrectly states that installation profiles do not 'have any effect on' already running sites

profiles/README.txt

 Installation profiles define additional steps that run after the base
-installation provided by Drupal core when Drupal is first installed.
+installation of Drupal is completed. They may also offer additional
+functionality and change the behavior of the site.
 
 WHAT TO PLACE IN THIS DIRECTORY?
 --------------------------------
 
 Place downloaded and custom installation profiles in this directory.
-Installation profiles are generally provided as part of a Drupal distribution.
-They only impact the installation of your site. They do not have any effect on
-an already running site.
+Note that installation profiles are generally provided as part of a Drupal
+distribution.
 
 DOWNLOAD ADDITIONAL DISTRIBUTIONS
 ---------------------------------