tools: typo arguemnts

%s/arguemnts/arguemnts/

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/tools/buildman/test.py b/tools/buildman/test.py
index bdd3d84..f92add7 100644
--- a/tools/buildman/test.py
+++ b/tools/buildman/test.py
@@ -195,7 +195,7 @@
         Args:
             echo_lines: True to echo lines to the terminal to aid test
                 development
-            kwdisplay_args: Dict of arguemnts to pass to
+            kwdisplay_args: Dict of arguments to pass to
                 Builder.SetDisplayOptions()
 
         Returns: