docs(README): clarify user installation path

Clarified the user installation path in the README to prevent confusion
regarding where binaries are installed. This change helps users easily
locate the installed binaries, reducing potential setup errors.

- Updated the README to specify the user installation path as
  $HOME/.local/bin.

Signed-off-by: Glenn <glenux@glenux.net>

README.md

@@ -75,7 +75,7 @@ cd code-preloader
 make prepare
 make build
 sudo make install                 # either to install system-wide
-make install PREFIX=$HOME/.local  # or to install as a user
+make install PREFIX=$HOME/.local  # or to install as a user in $HOME/.local/bin
 ```
 
 ## Usage