Clarify that reli analysis is a separate offline step

"then hand it to reli" could read as if the extension launches reli itself.
Make clear the dump is just a file, analysed later/offline.

https://claude.ai/code/session_017skw8BsHkF8wur7Pf4G9W5

Author: claude

README.md

@@ -2,8 +2,9 @@
 
 [![build](https://github.com/reliforp/ext-rdump/actions/workflows/build.yml/badge.svg)](https://github.com/reliforp/ext-rdump/actions/workflows/build.yml)
 
-Take a memory dump of the **current PHP process** at any point in time, then hand
-it to [reli](https://github.com/reliforp/reli-prof) for analysis.
+Take a memory dump of the **current PHP process** at any point in time. The dump
+is just a file; you analyse it later, offline, with
+[reli](https://github.com/reliforp/reli-prof).
 
 One call writes a snapshot of your process's memory to a file: