test/py: u_boot_console_base.py: fix typo

run_command does not have a parameter wait_for_each.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/test/py/u_boot_console_base.py b/test/py/u_boot_console_base.py
index b1f4742..eedf73f 100644
--- a/test/py/u_boot_console_base.py
+++ b/test/py/u_boot_console_base.py
@@ -160,7 +160,7 @@
 
         Args:
             cmd: The command to send.
-            wait_for_each: Boolean indicating whether to wait for U-Boot to
+            wait_for_echo: Boolean indicating whether to wait for U-Boot to
                 echo the command text back to its output.
             send_nl: Boolean indicating whether to send a newline character
                 after the command string.