binman: Use correct argument name in docstrings

Use correct argument name in docstrings.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/binman/entry.py b/tools/binman/entry.py
index fd617e4..11aa8e5 100644
--- a/tools/binman/entry.py
+++ b/tools/binman/entry.py
@@ -1111,7 +1111,7 @@
         If there are faked blobs, the entries are added to the list
 
         Args:
-            fake_blobs_list: List of Entry objects to be added to
+            faked_blobs_list: List of Entry objects to be added to
         """
         # This is meaningless for anything other than blobs
         pass