vga: Minor comment spelling fix.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
diff --git a/tools/vgafixup.py b/tools/vgafixup.py
index 68e5d1f..52fb934 100644
--- a/tools/vgafixup.py
+++ b/tools/vgafixup.py
@@ -13,7 +13,7 @@
 
 # It is also known that the Windows vgabios emulator has issues with
 # addressing negative offsets to the %esp register.  That has been
-# worked around by not using the gcc paremeter "-fomit-frame-pointer"
+# worked around by not using the gcc parameter "-fomit-frame-pointer"
 # when compiling.
 
 import sys