Update pep-0778.rst

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

Author: pablogsal

peps/pep-0778.rst

@@ -179,6 +179,7 @@ Attachment Protocol
 When a debugger wants to attach to a Python process, it follows these steps:
 
 1. Locate ``PyRuntime`` structure in the process:
+
    - Find Python binary (executable or libpython) in process memory (OS dependent process)
    - Extract ``.PyRuntime`` section offset from binary's format (ELF/Mach-O/PE)
    - Calculate the actual ``PyRuntime`` address in the running process by relocating the offset to the binary's load address