opencode: nix remove --rebuild usage

home-manager/progs/opencode.nix

@@ -25,7 +25,7 @@
       ALWAYS test code before returning to the user with something you think works. Always verify your work.
 
       ## Nix
-      For using `nix build` for any test, always append `-L --rebuild`. Build results are cached and may not behave as expected.
+      For using `nix build` append `-L` to get better visibility into the logs.
       If you get an error that a file can't be found, always try to `git add` the file before trying other troubleshooting steps.
     '';
     settings = {