Minor fix in alquimia integration

Author: Eric Engstfeld

src/specify_cli/integrations/alquimia_ai/__init__.py

@@ -172,7 +172,7 @@ def _inject_hook_command_note(content: str) -> str:
         def repl(m: re.Match[str]) -> str:
             indent = m.group(1)
             instruction = m.group(2)
-            eol = m.group(3)
+            eol = m.group(3) or '\n'
             return (
                 indent
                 + _HOOK_COMMAND_NOTE.rstrip("\n")