Fix a typo in the debug malloc usage info

Change-Id: I010fdc6c228a5f64edfef1c267cde7a2eef5190b
diff --git a/libc/malloc_debug/Config.cpp b/libc/malloc_debug/Config.cpp
index 885542e..c9fb850 100644
--- a/libc/malloc_debug/Config.cpp
+++ b/libc/malloc_debug/Config.cpp
@@ -321,7 +321,7 @@
   error_log("    recorded. of frames to capture. The default value is %zu.", DEFAULT_RECORD_ALLOCS);
   error_log("    If the allocation list fills up, all further allocations are not recorded.");
   error_log("");
-  error_log("  record_alloc_file[=FILE]");
+  error_log("  record_allocs_file[=FILE]");
   error_log("    This option only has meaning if the record_allocs options has been specified.");
   error_log("    This is the name of the file to which recording information will be dumped.");
   error_log("    The default is %s.", DEFAULT_RECORD_ALLOCS_FILE);