Correct spelling & grammar in 4.4 performance.rst

Author: gnito-org

performance.rst

@@ -151,7 +151,7 @@ overhead that can be avoided as follows:
     ; php.ini
     opcache.validate_timestamps=0
 
-After each deploy, you must empty and regenerate the cache of OPcache. Otherwise
+After each deployment, you must empty and regenerate the cache of OPcache. Otherwise
 you won't see the updates made in the application. Given that in PHP, the CLI
 and the web processes don't share the same OPcache, you cannot clear the web
 server OPcache by executing some command in your terminal. These are some of the